Product information： Size: 64mm x 46mm x 17mm(1.8”*2.5”*0.65”) Weight: 40g Network: GSM/GPRS Network frequency band: 850/900/1800/1900Mhz Chip: UBLOX chip GPS sensitivity: -159dBm GPS accuracy: 5m First start time: Cold status 45s Warm status 35s Hot status 1s Car charging voltage: 12-24V input 5V output Handheld charging voltage: 110－220V input 5V output Battery: Chargeable changeable 3.7V 800mAh Li-ion battery Standby time: 24hours Storage temperature: -40°C to +85°C Working temperature: -20°C to +55°C Humidity: 5%-95% non-condensing A: One electric one wire