Applications: Child care and protection Personal tracking and security Provide peace-of-mind Walking Touring groups Specification: Network: GSM/GPRS GSM/GPRS sensitivity:-159dBm GPS accuracy: 5-15m Wall charger: 110-220V input; 5V output Battery: chargeable 450 mAh Polymer Batteries Standby: 96 hours Operation Tempreture: -20-70 Humidity: 5%-95% non-condensing Diameter 45mm x 45mm x 16mm Gross Weight: 27g Basic functions: GPS + Location based service(LBS) Real time tracking via SMS or GPRS (TCP/UDP) Track on demand by calling or sms command Track by time and distance interval Authorised phone numbers to protect tracker information Voice Surveillance and talk back Easy switch for track or Monitor Low battery alarm Power off alarm SOS button for emergency Geo fencing control Package included: 1 x Tracker device 1 x USB charger cable 1 x Screwdriver 1 x Screw 1 x Strap 1 x User Manual