The green light on the back of the GooDong watch is flashing and the watch is warmbecause you have turned on the heart rate measurement function.

The green light on the back of the watch stays on because the watch is enabled to measure heart rate, so turn off the heart rate measurement or restart the watch to solve the problem. The blinking green light is because the watch is testing your heart rate.

When the watch detects that you have gone to sleep, it will activate the heart rate monitor to assess your sleep status and quality. You can turn off the scientific sleep function on the Sports Health App. You can choose according to your personal needs.

Gudong Watch Features

Gudong is the nation's first GPS sports social mobile software, tracking sports routes, meeting sports friends, discovering sports information and anecdotes, as well as live video streaming online, sharing sports tips and improving athletic ability with users around the world.

The author downloaded the app years ago. The Gudong GPS Sports Watch S1 is the result of 1 year of research and development by the Gudong team, which mined and analyzed the big data deposited by 150 million sports users.

Gudong S1 series in the use of the main features can be summarized as 3 points GPS function, photoelectric real-time heart rate, 35 days of ultra-long standby.