Description: Based on GSM/GPRS and GPS, you can locate and monitor any remote targets by SMS or GPRS. Features: Arget's latitude and longitude by SMS or GPRS, and check position by google earth. Auto Report position. Send the last location if it enters into the blind area. Add or change Username and Password. Monitoring and SOS feature. It will send an alert of Geofence to the user when it breaches the restricted area. It will send an alert of movement to the user when it begins to move. It will send an overspeed alert to the user when the target moves exceed of the restricted speed. It will send a low battery alert to the user if the battery is low. Applications: Protect the elder, kid, employee and pet, etc. Protect the businessmen. Manage the outworker. Specification: Item: Parameter Dimension: 62(L)x46(W)x19(H) mm Weight: 35g Network: GSM/GPRS Band: 850/900/1800/1900MHz GSM sensitivity: Less than_102dBm GPS chipset: SirF III chipset GPS sensitivity: -159dBm GPS accuracy: 5m Cold/ Hot TTFF: 35/2s Car charger: 12_24V input, 5V ouput Battery Power: 3.7V DC Li-ion Battery, 700mA Battery Life: About 72 hours Operating Temperature: -10C to +65C Storage Temperature: -20C to +70C Relative Humidity: 5% to 95 %, non-condensing