3G GSM/GPRS/EDGE, WCDMA(UMTS/HSDPA) WCDMA850/900/1900/2100MHz, GSM 850/900/1800/1900MHz Universal Communication Global Roaming optimization with SekurCell boarder-less SIM, Communication optimization Ultra-low power consumption, sleep state of the working current can be reduced to 0.02mA or less, Up to Five (5) Year Standby Battery or 1825 Location Updates. Management capabilities, Least cost routing Integrated GPS technology, Dual module GPS & LBS positioning, GPS precise positioning with A-GPS and uploaded by GPRS regularly, Supports real-time tracking and history track playback, Application Geo-fence support, Online event reporting, Full event data logging, Anti-tamper switch, Integration Act protocol, Multiple protocol support, Over The Air (OTA) Firmware upgradeable /configurable, Two monitoring LEDs, Waterproof Rating: IPX4. Battery Disposable super lithium battery（3.6V，5400mAh) Ultra-low self-rate: 25 ℃ for 1 year, less than 1%. Power consumption: Average working current <900mA; saving power current <20uA; size: 80mm*51mm*31mm. Weight: 200g. Working temperature: -20℃～60℃. Humidity: 5%～95%. GPS Sensitivity: Cold Start Capture Sensitivity：-147dBm Tracking sensitivity：-161dBm Positioning Accuracy: 2.5m.