Watch doesn’t power on and/or charge
If battery is completely flat the watch will appear to not turn on at all.
Place the watch on charge for 30 minutes using the USB cable and provided USB outlet plug.
After 30 minutes disconnect the USB cable and press and hold the power button for 20 seconds to reboot the watch.
If not charging, use an eraser or soft fabric to clean the charging metal contact points on the back of the watch, these contact points can oxidize due to use over time.
If the charge indicator on the watch is off, press and hold the side button for 20 seconds.