Frequently Asked Questions

Support Email

help@sinocare.com

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Check most frequently asked questions here, if you still need help then please contact us at help@sinocare.com

1 Glucometer - Safe AQ Angel

Please refer to this link: https://www.youtube.com/embed/qjrqg2CnWqk 

We'd like to warmly remind you that Safe AQ test strips are only available for the Safe AQ Smart & Safe AQ Voice glucose monitor.

If you want to use the Safe AQ Angel monitor, you have to use the correct test strips (Safe AQ Angel Strips).

Press and hold the right hand button for 3 seconds while the unit is powered off. This takes you to the set time function

You just need to dip the end of strip in a tiny amount of blood and then the strips will suck your blood sample automatically.

Sorry,it can't turn off the sound,beeping is one of function of this device which indicates next step to take.

We are sorry to tell you that the blood glucose meter we sell can only be used by humans.

We'd like to tell you that this product does not contain a control solution.

The control solution is a special liquid aim at testing if the test strip is OK or not.

However, we have already tested the strips right after the production, you don't have to test it again. 

You may skip that step and use the blood glucose meter directly,please don't worry about it.

Yes,it can use on many people ,please notice that the test strips and needles are only for one-time use.Thanks.

May I know if you got the 2 results under the same condition? (time / both fasting or both after meal results).

Do you test them with the same drop blood.

When the blood is not enough, do not squeeze your finger, so as not to squeeze out the tissue fluid and affect the test result; instead, let the blood be pushed out from the finger to the fingertip.

If so, I suggest you go to the nearby clinic and get the blood testing result, then compare that result with the one from our glucose meter, if the difference is less than 20%, then our glucose meter result is reliable.

1.Press and hold ▼ for 3 seconds and themeter will turn on.

2.The meter enters into the Time and Datesetting mode.

3. It displays d-1 and the segment of yearflashes.

4.Using the ▼ and ▲ tab, select the correctdate/time.

5.Confirm date by holding main button .

6.Press and hold main button for 3 seconds or insert the test strip to exit the time and date setting mode.

1 Glucometer - Safe AQ Smart

Please refer to this link: https://www.youtube.com/embed/ciReNyymY9M 

The 10 records of Safe-AQ machine can not be deleted at the same time. Once 10 records are in memory, adding a new record causes the oldest one to be deleted. The records can be covered but can not be deleted all.

There are four main reasons will cause this error message ,such as incorrect test method,used test strip ,expired test strip or damped test strip ,test strip exposed to air more than 3 minutes.

If so,you need to use a new test strip and insert test strips into meter before apply sample to strips then test again

Besides,you need to confirm you purchased the correspond test strips with your glucometer at the same time.

Test strips are easy to buy, you can search from the same platform to buy spare test strips.(Please note to buy safe AQ smart test strips)

Yes ,you can use the glucometer to test the blood sugar for others , please notice the lancets and strips are for one-time use.

Hello,please follow the below steps and try again:

1. When using the blood glucose meter to measure, make sure that the second drop of blood flows out and then start to absorb and measure with the test strip.

2. During the test, did you pinch your fingers hard? We recommend that when collecting blood, push it from the finger near the palm to the finger for blood collection.

3. When using the test strip to collect blood, is it full at one time?

You can see if the white part of the test strip is full.

4. Does the test strip absorb blood correctly?

You need to place your finger on the top suction port of the test strip, not on the side. When the suction port turns red, it means that a blood sample has been collected. (Do not drip onto the test paper)

5. Is blood collected only when the alcohol evaporates?

When taking blood, you need to wait for the alcohol to evaporate before giving the needle injection.

If the results remain the same,please email us at support@sinocare.com.

Yes, it will record the results of your previous measurements,but there is no such an APP.

Please replace the battery (confirm the batteries are correctly installed with the right position of sign “+” and “-”)and insert the test strip, the meter will turn on automatically in most cases.

1 Glucometer - Safe AQ Voice

Yes. Sinocare has a YouTube channel and the video instructions for Safe AQ Voice glucometer is at “https://youtu.be/SRQTLRqBwFg”. You can like and comment on our video, as well as subscribe to our YouTube channel to get the latest products and instructions.

The voice feature is turned on by default. If you want to turn it off, please refer to the following steps:

  1. Flip the meter over, and slide the battery cover off.
  2. Remove the batteries to find the voice switch inside the battery chamber.
  3. Switch it off to turn off the voice. If you need the voice feature again, just switch it on.
  4. Insert the batteries and slide the battery cover on.
  5. Check the screen of the meter. If it does not display the “♪” symbol, then the voice is off. If you still see the “♪” symbol on the screen, repeat the steps above and make sure you don’t miss anything.

No. A person cannot diagnose diabetes using home testing alone. The glucometer monitors your blood sugar level to show if it’s high or low on a regular basis, which can be helpful in the diagnosis of diabetes. However, the test results can be affected by many factors, so if you see an unusual reading, you can go to your local hospital and ask the doctors for further professional testing. They will take a venous blood test and check your blood sugar levels for the past 3 months to decide whether you are diabetic or not.

The voice function. The Safe AQ Voice comes with additonal voice features. Both monitors are used to measure your blood sugar.

The Safe AQ test strips can be used with the AQ Voice glucometer.

Please double-check whether you purchased the correct one, otherwise, you won’t be able to use the product.

If you have difficulties finding the correct matching test strips by yourself, just contact the customer service on the corresponding online marketplaces, or email at support@sinocare.com with your order number, our after-sale service team will be glad to help you.

Please check if you are doing the same as the following instructions say:

1. Are you absorbing the blood too fast?

When using the blood glucose meter to measure, make sure that the second drop of blood flows out and then start to absorb and measure with the test strip.

2. During the test, did you pinch your fingers hard? 

When collecting blood, push it from the finger near the palm to the finger for blood collection.

3. When using the test strip to collect blood, is it full at one time?

You can see if the white part of the test strip is full.

4. Does the test strip absorb blood correctly?

You need to place your finger on the top suction port of the test strip, not on the side. When the suction port turns red, it means that a blood sample has been collected. (Do not drip onto the test paper)

5. Is blood collected only when the alcohol evaporates?

When taking blood, you need to wait for the alcohol to evaporate before giving the needle injection.

If the results are variable more than 15%, please email us at support@sinocare.com for further help.

The tester is powered by 2 AAA batteries. Those preincluded batteries are not rechargeable, and you'll need to replace those with new ones.

You are seeing the “E-7” error because of an insufficient test sample size, which means there is not enough blood. Please touch the blood with the end of the strip and let the strip suck more of it. Use a new test trip to perform the test and make sure the sample size is sufficient.

1 Glucometer - Safe Accu

Please noticed if you purchased Safe Accu glucometer,you should use the Safe Accu test strips as well.

Otherwise,it may result in the product being unusable.

It comes with 3.0V (CR2032) button cell.

Dear,kindly note the acceptable difference should below ±20%.

For the accuracy issue, please replace the battery and kindly follow these steps:

1. Clean your finger up before testing;

2. Do not use the lancing device to get blood sample until the alcohol evaporated after you used the alcohol swap;

3. Do not squeeze your finger to get the blood sample;

4. Finish the test within 3 minutes;

There are four main reasons will cause this error message ,such as incorrect test method,used test strip ,expired test strip or damped test strip ,test strip exposed to air more than 3 minutes.

If so,you need to use a new test strip and insert test strips into meter before apply sample to strips then test again

Besides,you need to confirm you purchased the correspond test strips with your glucometer at the same time.

We'd like to tell you that this product does not contain a control solution.

The control solution is a special liquid aim at testing if the test strip is OK or not.

However, we have already tested the strips right after the production, you don't have to test it again. 

You may skip that step and use the blood glucose meter directly,please don't worry about it.

We use it on full power mode every night.We have slept so well or had such a great time with the help of such wonderful machine.

No,it only detects your blood sugar level.

Yes,it has the CE certification. All of our glucometers meet the sales qualification.

  The device shows your blood sugar level. You will know at what level you have
hypoglycemia. We also suggest you go to the hospital for further blood test
and ask for the advise of your doctor.  

No, there is not such a battery level indicator,but when it's time to replace the batteries, it will display an "E-1" error code. 

Please confirm the below condition and try again:

1. Please check whether the test paper is out of date or wet.

2. Has the battery been used for a long time?

3. During the test, did you pinch your fingers hard?

We recommend that when collecting blood, push it from your finger near your palm to your finger for blood collection.

4. Do you collect blood only when the alcohol evaporates?

When taking blood, you need to wait for the alcohol to evaporate before performing a needle injection.

5. When using a test strip to collect blood, is it full at one time?

You can see if the white part of the test strip is full.

6. Did the test paper properly absorb the blood?

You need to place your finger on the top suction port of the test strip, not on the side. When the suction port turns red, a blood sample has been taken. (Not dripping onto the test strip)

If the Error message still shows, please email us at support@sinocare.com for further help.

Yes, please refer to this link: https://www.youtube.com/embed/FlagB0JLUhg

1 Glucometer - Safe Accu 2

Yes. Sinocare has a YouTube channel and the video instructions for Safe Accu 2 glucometer is at “https://youtu.be/Z4K7n8DK7Ko”. You can like and comment on our video, as well as subscribe to our YouTube channel to get the latest products and instructions.

The Acceptable error range is below ±20%.

For accuracy issues, please replace the battery and kindly follow these steps:

1. Clean your finger up before testing;

2. Do not use the lancing device to get blood sample until the alcohol evaporated after you used the alcohol swap;

3. Do not squeeze your finger to get the blood sample;

4. Finish the test within 3 minutes.

No. You cannot use Saft Accu test strips with Safe Accu 2. It is only usable with the Saft Accu glucometers. You must purchase the Safe Accu 2 test strips to use with Safe Accu 2 glucometers. Unmatched glucometer and test strips result in unusable products.

This blood glucose meter is used to detect blood sugar level, it cannot detect ketone level.

Please refer to the following steps:

  1. Turn off the device.
  2. Press the DOWN ARROW button for 3 seconds to enter the setting mode.
  3. Press UP or DOWN ARROW to set the year according to your needs.
  4. Press the ON/OFF button to confirm.
  5. Move on to set the month and so on.

It wouldn’t be possible to reset the machine for now, and we apologize for the inconvenience. However, all of the sinocare blood glucose meters you purchased are tested before shipment, and there is no need to reset the machine. 

No. A person cannot diagnose diabetes using home testing alone. The glucometer monitors your blood sugar level to show if it’s high or low on a regular basis, which can be helpful in the diagnosis of diabetes. However, the test results can be affected by many factors, so if you see an unusual reading, you can go to your local hospital and ask the doctors for further professional testing. They will take a venous blood test and check your blood sugar levels for the past 3 months to decide whether you are diabetic or not.

Please follow the below steps and try again.

  1. Replace the batteries with brand new ones (which you’ve never used before);
  2. Check that the batteries are correctly installed with the right position of sign “+” and “-”;
  3. Remove the batteries, wait for 3 minutes, reinstall the battery;
  4. Insert the test strips correctly with the printing facing up and push it into the strip port until it stops; (Please use the safe Accu 2 test strips and insert strips in a correct direction )

If it still can't work, please contact us at support@sinocare.com immediately.

It could have resulted from the following reasons:

1: Low battery, please replace the battery and try again.

2: Incorrect procedure, please insert the test strip firstly, then apply your blood sample.

3: Incorrect absorb operation, please put your finger on the top suction port of the test strip and make sure the top changes to red color after applying the blood sample.

4: Error code, please check the product manual for detailed reasons or contact us directly for further help.

2 Accessories -Test Strips

No, you can't. It's just for one-time use.

The 170321-4 is a code of the device, instead of the specific model. However, as long as you are using the Safe-Accu blood glucose meter, then you can use the Safe Accu test strips. If you still think that there is a risk of buying the wrong stirps model, just contact us at support@sinocare.com and we will help you with that.

No, they do not. Safe Accu test strips can only be used with Sinocare Safe Accu blood glucose meter, and it can not work with devices in other brands.

Code-free strips are already ready to use out-of-the-box, while with the non-coded ones, you have to enter a code into the glucometer.

You have a Safe AQ Smart blood glucose meter, but the model of the test strip purchased this time is Safe Accu, so they do not match and come up E-3. The Safe Accu test strips can only be used with Safe Accu blood glucose meters, if you want to use the monitor, you should buy the safe AQ Smart test strips as well.

The expiry date of the blood sugar strips: 24 months ,Period After Opening :6 months;

The expiry date of the uric acid strips: 12 months ,Period After Opening :3 months.

2 Scale - Body Fat Scale

You can know 12 indicators, they are: weight, fat, BMI, metabolism, muscle, water, bone mass, visceral fat, obesity, protein, age, fat-free weight.

This body fat scale data can be synced with Fitbit, Apple Health, and provide apps for Apple Watch.

This electronic scale provides intelligent detection of extracellular fluid through the use of dual frequency bioelectric impedance. The max.weighing range is 180 kg and the measurement result is accurate.

This data application for receiving the "okok international" body fat scale can be synchronized with the Fitbit, Apple Health and Apple Watch applications at the same time, so that you can understand your body fat status more conveniently and quickly.

Electrode measurements are safe.

The inaccurate weighing of the body fat scale may be due to improper operation. For example, the body fat scale should be placed on firm, flat ground for weighing. For this, you can read the instruction manual in detail, which contains the relevant instructions.

We will provide 2 AAA batteries, the battery can be used for a period of time, the life is the normal battery life, but when the battery cannot be used, you need to replace the rechargeable battery when the power is off.

You can try as belows:

1. You need to activate Bluetooth on your phone first, then download the [okok international] APP.

2. After opening the application, register an account and log in.

3. After logging in, you can search for scales via the app. So, you have to stand barefoot on the scale to connect.

4. Check the instruction manual and follow the instructions.

If you still can't connect to Bluetooth, please contact us again

The surface is made of glass.

Our body fat scale provides intelligent detection of extracellular fluid through dual frequency bioelectrical impedance. The measurement result is accurate and the weighing range is 180 kg.

3 Blood Pressure Monitor - AES-U181 (UZ0)

https://www.youtube.com/embed/8IEYN3lVUtk

Please replace with new batteries and insert the batteries correctly.

The product currently doesn't have an app to keep history on iPhone, but it can directly store 180 measurement values for two users on this machine, and it is also convenient for you to query.

The type power supply of the product you purchased is DC 5V, 1A. 

The product you are intended to purchase is designed for adults only with arm circumferences of 8.66-16.54 inch

Yes. During the measurement, the pressure causes the cuff to expand for measurement.

Reason:

1,Human blood pressure changes dynamically. Exercise, mood, and diet can change blood pressure. The long-term level of blood pressure can show the real value of blood pressure. If the value of multiple tests is quite different, it means that the monitor is not accurate, and it is normal within +-8.

2,Tyingng tightly and loosely will affect the test results, smoking, exercise, and eating will also affect the results.

Suggestions:

1,It is best to directly touch the skin or thin clothes; 

2,Sit still for 5 minutes and measure it for three times every time; 

3,The test should be mad in a quiet environment as much as possible; 

4,Blood pressure is the lowest around 9 am, and the highest at 3 pm, please choose a suitable time for measurement.

Accessories - Lancet Pen

Please put the item in the top pull back at the bottom twice and then push the release to stab the finger you need the maximum gear. If this doesn’t work yet, it may be defective.

Set number 4 if your finger’s skin is soft, and higher if it’s thick or calloused. If you’ve just started, try a couple of different settings to find the most suitable numbers for you. You don't need a lot of blood but a clear drop seems to be sucked more easily than blood that's spread.

Please twist the adjustable comfort tip to adjust the puncture depth.If your finger skin is thin and soft,you can set a lower gear of the lancet pen.

1.Unscrew the lancing device cover;

2.Insert a lancet into the lancing device until it comes to a full stop;

3.Twist and pull to remove the lancet protector. Retain the lancet protector for safe lancet disposal;

4.Screw the lancing device cover back on;

5.Twist the adjustable comfort tip to adjust the puncture depth;

6.Pull the spring cover back to arm the lancing device;

7.Make sure the lancing device is pressed firmly to your finger, then press the button to the lancet.

All of our lancets lengths are the same as yours.

You can twist the adjustable comfort tip to adjust the puncture depth.

When you replace the end cap, you shouldn't see the lancet and that's for the safety of the customer.

And when you apply a blood sample, you need to place the tip firmly against the finger with the other hand, and then press the trigger button, so the lancet will trigger quickly to puncture your finger tip."

Blood Pressure Monitor - A801

https://www.youtube.com/embed/n2uh8vzsOX8

Yes, you can turn the voice off by setting. When the machine is not turned on and the display is blank. Keep pressing the "SET" key without letting go, wait until the screen time flashes, then press the "SET" key to switch the function, and the "MEM" key to adjust. After switching to the voice function, click the "MEM" button again to turn the voice function "on / off" on and off. You can adjust the time (year / month / day / hour / minute) in the same way.

This Blood Pressure Monitor may fit a child depending on their size but this Blood Pressure Cuff is designed specifically for adults and to accomodate the wide range of adult sizes so we wouldn't recommend it's use on children. Of course it is still safe for use on anyone.However, the results you get may not be as accurate as when you use on adults.

the blood pressure monitoris battery-powered and it requires 4 dry batteries (4*AA) included.

Yes, the setup program includes time (year / month / day / hour / minute) and sound on and off. The four-digit number flashes to set the year. You can check the settings by viewing the manual. 

Currently, the length of cuff of our blood pressure monitor is 8.66-16.54 inch.It can be used by most of our customers. And we are constantly optimizing our products to meet the different needs of our customers.

Yes, the blood pressure monitoris battery-powered and it requires 4 dry batteries(4*AA). If you have a variety of electronic products, you do not need to find a device (power cord) that has not been used for a long time, so after use it, you only need to place it in the designated location, battery powered, and you can use it immediately next time.

Blood Pressure Monitor - AES-U131 (UB4)

https://www.youtube.com/embed/aTSL1Ut_7sM

Refasten the cuff and then measure again. About the detailed reason,please refer to the Trouble shooting on the manual.

Yes,it will prompt you automatically.

Yes,it will inflate quickly and read your pressure then deflate.

Yes.It is very suitable for elderly people living alone. Because the bp- monitor only needs to put on the cuff and connect the power of the machine during the measurement process to measure blood pressure normally. This can be done easily by yourself.

Yes,this BP monitor is FDA approved. 

2.And each for 90 recent records.

We are so sorry to tell you that we currently don't sell cuffs of different sizes separately. But please rest assured, the product you are asking is designed for adults with arm circumferences of 8.66in-16.54in, it can be adjusted freely according to the circumference of your arm.

Gluco/Urid Acid Meter - Safe AQ UG

Yes. Sinocare has a YouTube channel and the video instructions for Safe AQ UG Blood Glucose Meter/Uric Acid Test Kit is at “https://youtu.be/N-ovVWp4854”. You can like and comment on our video, as well as subscribe to our YouTube channel to get the latest products and instructions.

Hello, the Uric Acid Tester only help to monitor your blood Uric Acid level, it will show if you are having low or high blood Uric Acid on a regular basis which may aid in a proper diagnosis.

However, there are many factors that will affect the test results.

So you'd better go to your local hospital and ask the doctor for further professional testing.

Your doctor will take a venous blood test and they will be able to see your blood Uric Acid levels and then make a decision whether you are uricemia or not.

There are many factors that will affect the test results, please refer to the following notes and try to test again.

1. The test strip is exposed to the air for too long before the test, please use a new test strip;

2. The blood-sucking port of the test strip is too close to the finger, and the blood sample cannot be sucked smoothly. The correct operation is to lightly touch the blood drop on the blood-sucking port of the test strip;

3. The test strip packaging is damaged and the desiccant tablets become soft; the bottled test strip takes too long to open the cap and the test strip becomes damp; the test strip exceeds the expiration date after opening the bottle;

4. The storage temperature of the test strip (1-30℃), too high or too low will cause the test strip to fail;

5. Environmental test temperature (15-35℃), too high or too low will cause test deviation;

6. The test strip expires;(The expiry date of the uric acid strips: 12 months, Period After Opening :3 months)

7. The test mode is incorrect;

8. Taking medication due to complications;

9. When the blood is not enough, do not squeeze your finger, so as not to squeeze out the tissue fluid and affect the test result; instead, let the blood be pushed out from the finger to the fingertip.

Head Stethoscope

Yes!! It can be used to hear the baby's heartbeat and it works well.

It is a double bell. So yes the smaller side is for babies & children.

Yes, but it's very slight, not unpleasant and would also disappear after a few days out of the packaging.

Yes, it is guaranteed. If there is a quality problem, you can send an email to the seller. We can help you solve the problem, such as refunding and replacing goods.

No, they are made of silicone, and four different pairs of earplugs replacement with different hardness have given you a comfortable wearing experience in your ears.

Yes, it is light and portable.

Hi.This comes with multiple ear pieces, some softer and some harder.

Yes. This one can hear the heartbeat of all kinds of small animals. I think it's pretty easy to use.

Scale - Food Scale

https://www.youtube.com/embed/GMkxtijDzkU

Yes,Weigh once, and press [Save] once to save a historical record. After saving, you can view the historical weighing data in [Record],thanks.

1.Put the kitchen scale on a Hard & Flat surface, click the 'TARE' button.

2.Place the container on the scale when the screen displays '-18:8.8.8'.

3.Add the food into the container after the screen displays '0'.

4.You will get the desired weight.

This kitchen scale easily fulfills your needs.Pls swith the 'TARE' button once every time I add a vegetable to my salad bowl, just hit the ‘TARE’ button and keep adding your ingredients until you make a salad with perfect proportions.

It is kitchen scales digital weight, which can be switched in units of g/ml (water) / ml (milk) / fl.oz (water) / fl.oz (milk) / oz / lb :oz. It can be switched in grams and oz.

Scale - For Body Weight

Yes, It can automatically track the weight of multiple people. According to its description, you can add your family members by clicking the home screen and adding family users to the settings. It's a very simple and versatile scale. I couldn't love it more.

    It
should be that the battery is dead, you can try to replace it with a new
battery.  

Yes, and this operation is very simple. You need to turn on the scale, then place the scale on a flat and hard ground, and wait for the scale to automatically shut down, then the return to zero is successful. If you didn't reset it to zero, the test result will be inaccurate.

You just need to step on the scale and turn on the power. If there is no operation, the product will automatically shut down within 10 seconds.

Yes, I have used it like this. It is compatible with IOS 8.0 / Android 4.3 or later devices.

When the BMI is over 24, the system will prompt you that you are overweight. This is based on the standards set by the World Health Organization. Below information is the standard scope:

Too light: less than 18.5

Normal: 18.5-23.9

Overweight: 24-27

Obesity: 28-32

Very obese, higher than 32

The system reminds you which places you should pay attention to so that your body can reach a healthy state. But this is not an absolute disease criterion.

The prompts of the system are only for your reference. Please follow the advice of your doctor or dietitian. 

Thermometer - Forehead Thermometer

No. It should never touch the patient. Hold it approximately 5cm away from the forehead.

This thermometer is suitable for both adults and children. You only need to buy a thermometer to meet your family's needs for temperature measurement. The design of our products is very user-friendly. This high sensitive infrared sensor can guarantee accurate temperature measurement even without touching your baby. The large LED screen displays the reading easy and clear even in the dark. It doesn’t have any impact on the life and work of all your family.

Our forehead thermometer is indeed FDA approved.Following provide relevant imformation:

Re:K180207

Regulation Number: 21 CFR 880.2910

Regulation Number:Clinical Electronic Thermometer

Regulatoty Class:Class II

Product Code:FLL

This forhead thermometer is designed to take the temperature from the forehead. Different parts of the body may have different results, It has been tested that the temperature of the forehead will be much higher than the temperature of the wrist. So the forehead will be more consistent. We make the most of high precision infrared sensor and our practical patent design. Everything is to make sure you get accurate and consistent readings. Please rest assured to use.

Thermometer - Oral Thermometer

It comes with a button battery (LR41 1.5v), On the side of the start button, there is a cap that can be opened, That is the battery cover. You can replace the battery here.

The deviation range between the measured value of this thermometer and the actual value is ±0.2°F (±0.1°C), so you can use it with confidence.

Yes, you can clean it with code soapy water or isopropyl alcohol diluted with water.

It comes with a portable transparent box. This makes it more convenient to carry it when you go out. We will update the product packaging information on the detail page so that you can better understand the functions and features of the Sinocare thermometer.

After turning off the device, press and hold the on/off button for about 4-5 seconds to automatically switch between Fahrenheit (°F) or Celsius (°C).

Measuring range: 96-107 °F

Measurement error: ±0.2 °F

    This
thermometer is made in China.  

White Noise Machine

https://www.youtube.com/embed/372WSbpT_2o

Yes, this white noise machine has the lullaby,it is good for the children.

We use it on full power mode every night.We have slept so well or had such a great time with the help of such wonderful machine.

Yes, you can use your ear phones if you like. When I was traveling, I will plug ear phones, in this way, I will not disturb others.

You can set it for 30, 60 or 90 min. But If you don't set the time, it will always run. For example, if you forget to set the time when you go to the bed, it will run for the whole night.

About 3 hours. I usually charge it during the day after using all night.

There are 20 sounds available to choose from. This machine has sounds of rain, birds, thunder, stream, crickets and so on. I think these sounds are useful for good sleep.

No, it has two volume buttons, one is to increase the volume, the other is to decrease the volume, and the volume of this machine is divided into seven levels, you can adjust the volume if you want by pressing these buttons.

No, it can't be set but only set a single song loop. There are 20 natural sounds available to choose. I like the rain sound very much.