Children Study Play Touch Screen Smart Watch Outdoor Tracker SOS Watch
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Features: Watch alarm and safaty area. Low power alarm and remote turn off. Inter-phone and health monitor. Mobile phone or computer GPRS service platform, double control model. The watch need SIM card to use it.
Descriptions: GSM main chip: MTK 6261D, the dominant frequency of 260MHz GSM band support: 850/900/1800/1900 four frequency GPRS:Class12(only support 2G network) Base station positioning accuracy: 100-1000M Average standby current: less than 3 mA Average operating current: about 55mA Operating temperature: -20 ~ 70 degree Working humidity: 5% to 95%