Specification: Color: Black Material: ABS plastic Network: GSM/GPRS Network band: 850/900/1800/1900Mhz GPS sensitivity: -159dBm GPS accuracy: 5m First starting time: Cold status 45s, Warm status 35s, Hot status 1s Car charging pressure: 12-24V(input), 5V (output) Handheld charging voltage: 110-220V (input), 5V (output) Battery: Chargeable 3.7V 800mAh Li-ion battery Standby time: 24hours GPS chip: For UBLOX chip Number of channels: parallel 20 channels Positioning time: cold start / hot start time 35 / 1 second Storage temperature: -40 ° C - +85 ° C Working temperature: -20°C - +55°C Humidity: 5%~95% (non-condensing) Package List: 1 x GPS Locator 1 x Instruction Manual 1 x Data Cable 1 x Thimble 1 x Adhesive Paste 1 x Magnet Note: 1.GPS signals are only available outdoors, to use GPS positioning. 2.Confirm the mobile phone card, to have calls, SMS, GPRS Internet access. 3.Confirm that there is sufficient balance. 4.Confirm that Caller ID is turned on and Call Transfer is turned off. 5.For the first time, please charge for more than 6 hours. 6. the GSM phone card correctly. 7.Do not disassemble the device. 8.Please use the factory-configured USB cable and charger. 9.Time sleep is a single positioning mode, and vibration sleep and shutdown sleep are continuous positioning modes.