... gps tracker:1. Sirf3 GPS module (20 channels)2. Support GSM/GPRS (850/900/1800/1900MHz)3 ... to 90%CPUTI:MSP430F149(16MHz)GSM Module:Tri-mode:850/900/1800/1900MHzTally with: GSM phase 2/2+-Class ... 3.5 hours)Accessoriesdevice, Connecting cable ,GPS antenna ,GSM antenna, Engine controller, SOS button, MicrophonePorts:RES: ... your own GPS tracking system for free2, Free server service period: 12-month3, We ...