①
A Nano SIM Card needed，do not support CDMA2000；
Please use original Nano SIM card provided by operator, do not use
card made by card cutter or it will harm watch.
NOTICE
②
GPRS & Call ID of Sim Card must be opened；
Traffic, SMS, Calls and other SIM card service fee charged by operators;
③
Positioning / Remote Power off / Remote command fucntion rely on
the network of base station. Device may not work well if the network
signal is not very good;
④
Product should stay away from fire, high temperature, heat and other
extreme environments;
⑤
Product should not be long time soaked or rinsed in water;
SIM
Micro SIM
Nano SIM