Keep Earphones In While Running
Related Faq
Q
Does it have an auto-calibration? How often is the value refreshed?
A
The calibration is super simple. Press all 3 buttons until the a timer appears and counts down from 200 seconds. It requires the user to place it out doors to calibrate to 500ppm which is the average ppm outdoors. 
Q
Can I connect Bluetooth earphones from other brands?
A
Yes, M3 can be connected to any brand of Bluetooth earphones for intercom. 
Q
What is the video format? How to view on the computer
A
The video is in AVI format, please insert the SD card into your computer and use VLC media player to view the video. 
Q
Can the UV Filter to avoid vignetting in the Wide Angle Len?
A
Yes,it can 
Q
Does the watch also show the current running speed while running?
A
I have not tried this function. 
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