can be used to set a single time limit, and the watch will vibrate to remind you
when it's reached.
Compass
You need to wear the watch and complete a calibration process when you enter
the compass page for the first time. The latitude and longitude data have to be
obtained via GPS signals in an open space outdoors. It will take some time to
enable GPS positioning. Please wait patiently. To avoid signal interference, please
keep away from any magnetic field when using the compass.