1. When you receive the watch, please put the watch on a full charge about 3 hours.
2. The watch supported micro sim card of AT&T or T-Mobile (Verizon Sprint not supported). Please activated 2G for watch and make sure your smartphone activated 2G/3G/4G.
3. Please use the small screwdriver to open the case behind the watch, then put the battery out, and put the sim card into the correct place.
4. After that, please starting up the watch, the watch time will be automatic updates to correct time, so you do not need to set the time.
5. Finally, please use your smartphone to scan the QR code of the user manual to download the app SeTrack2, then input the REG CODE (behind the watch) as the account to register the app.