Wireless network: GSM / GPRSFrequency range: 850/900/1800 / 1900MhzGPS Module: Latest MT3336N chipGPS sensitivity: -159 dBmGPS accuracy: 5-15 mGPS Start time: Restart approx. 45 s - Operation approx. 10sExternal power supply: 12-24 V outputStationary power supply: 110-240V inputBattery: 1000mAhOperating temperature: from -20 ° C to 55 ° CHumidity: 5% - 95% (non-condensing)Material: PlasticItem Size: 46*12*65mmPackage Size: 122*103*53mm