Specification: Type: GPS, Tracker. Network: GSM/GPRS. GPS Band: GSM 850/900/1800/1900Mhz. GSM antenna: Built-in quad-band bracket antenna. GPRS: Class 12. GPS: MT3326. Number of channels: 20 channels. GPS sensitivity: -159dBm. GPS Positioning Precision: 5M. GPS antenna: Built-in high-gain ceramic Patch antenna. Capture sensitivity: -144dBm. GPS Start Time: Cold status: 45s. Warm status: 35s. Hot status: 1s. Work voltage: 12V-36V. LED indicator: 3 LEDs. Storage Temp: -40°C to 85°C