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Frequently Asked Questions

What is the size for KidsO2?

1.7'' - 1.9''/ 42-49mm

*Can be worn on any finger.

Can it use for babies? How old is it suitable for?

Babies cannot. Suitable for children aged 3 to 10.

Data Sync

Open App to sync data, check results.

Do I need to pair Bluetooth? 

The device Bluetooth will be enabled automatically after it’s turned on.To establish a Bluetooth connection, 

1)keep the device Bluetooth enabled. 

2)Make sure the phone Bluetooth is enabled. 

3)Run the App.

Why do I need to allow Location access for Android?

With android phone, you need to allow Location access to make Bluetooth work. We DO NOT collect your location data.

Do I need to power off the monitor manually?

Usually no need. If you don’t use it, it will power off automatically in a while.

If the battery runs out during use, will the data be saved?


Can I change the settings of audio alarm?

Yes.When you connect the monitor to your phone/pad, you can turn on/off the sound, change intensity or threshold.

Can I change finger during use?

Yes, when you take the sensor off, the countdown will begin. During the countdown, wear the sensor again, the record will be resumed.

How to correct the time on the screen if it’s incorrect?

Connect to your phone, device clock will follow your phone time automatically.

Can I use other finger than thumb?

Thumb is recommended, index finger as option in case of too tight for thumb. You can try to move the sensor along the index finger to find out a best fit, also can try to rotate the sensor around the finger to get a comfortable wearing. Do not leave space between the sensor and finger, loose wearing will cause inaccurate measure. Please do not use middle finger.

Do I need to connect device to phone app during sleep?

It is not necessary. The built-in storage is up to 4 sessions.