Check whether the watch is the purchased model and has complete accessories: 1 device,1 USB Cable,1 User manual.
Order a Micro SIM card which supports GSM network (2G).SIM card need enable GPRS data and caller ID function, 30 MB data per month will be enough.
Turn off the watch before installing the SIM card.
Charge the battery by connecting to a computer with the matched USB cable. Do not charge over 3 hours.
Note: Charging the battery should only be under adult supervision.
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