Screen: 1.3 inch IPS, 240x240 Android4.4 CPU: Spreadtrum SC8521E, ARM CortexTM A7MP dual core 1.2GHz GPS SC8521E, L1, 1575.42MHz C/A code GPS accuracy 5-30m Wi-Fi accuracy 30-50 m LBS accuracy 100 m and above Wi-Fi wireless 802.11 b / g / n Video call function Video call via Setracker app or device services and deliver them as a data stream over LTE.) Bluetooth: 4.2 Built-in sensor (thermometer): 24-hour body temperature detection, high temperature alert Memory RAM: 512MB ROM: 8GB Location GPS, AGPS, LBS, Wi -Fi 2G GSM Network B2/3/5/8 3G WCDMA Network B1/8 4G FDD-LTE Network:B1 B2 B3 B4 B5 B7 B8 B12 (17) B20 B28A (or B1 B3 B5 B7 B8 B38 B39 B40 B41) SIM card: Nano SIM Call phone number 3 SOS numbers + 15 in SOS phone book Support in APP Support G-sensor (Three-axis) Support remote monitoring (call back function) 2MP front camera IP65 waterproof rating Lithium battery 650mAH, 663032 APP: Setracker Charging type: USB magnetic cable (Pogo Pin) Size 232*40*15.5mm Other functions: Electronic fence (GEO), history tracking, alarm clock, watch finder, phone book, remote shutdown clock, Android and IOS smart phone APP support.Nano SIM Call phone number 3 SOS numbers + 15 in SOS phonebook APP support G-sensor support (three axes) Remote monitoring support (call back function) 2MP front camera IP65 waterproof rating Lithium battery 650mAH, 663032 APP: Setracker Charging type: USB magnetic cable (Pogo Pin) Size 232 * 40 * 15.5mm Other functions: Electronic fence (GEO), history tracking, alarm clock, watch search, phone book, clock with remote shutdown, support for Android smart phone applications and iOS.Nano SIM Call phone number 3 SOS numbers + 15 in SOS phonebook APP support G-sensor support (three axes) Remote monitoring support (call back function) 2MP front camera IP65 waterproof rating Lithium battery 650mAH, 663032 APP: Setracker Charging type: USB magnetic cable (Pogo Pin) Size 232 * 40 * 15.5mm Other functions: Electronic fence (GEO), history tracking, alarm clock, watch search, phone book, clock with remote shutdown, support for Android smart phone applications and iOS.remote shutdown clock, support Android and IOS smart phone apps.remote shutdown clock, support Android and IOS smart phone apps.