high technology to track the car or others,universal,wired with camera,sd card memory,reliable and new product,cost-effective ... MHz Chip SIRF3 chip 3G chipWCDMAGPS sensitivity-159dBmGPS accuracy5mTime to first initiateCold status 45sWarm status 35sHot status 1sInput voltage12V ... 3.7V 1500mAh batteryStandby48hoursStorage temp-40°C to +85°COperation temp-20°C to +55°CHumility5%--95% non-condensing