Feature:1. Fast & precise positioning, adding AGPS auxiliary star positioning function.2. Increasing GPRS & SMS mode compatibility functions.3. Increase power saving mode, deep dormancy, ultra low power consumption.4. Humanized design, with hanging buckle or lanyard.5. With new GPX function. Specification: Dim: 63mm x 46mm x 21mm Weight: 39g Network: GSM/GPRSBand: 850/900/1800/1900 Mhz GSM chip: MTK6261GPS chip: U-blox 7020GPS sensitivity: -159d Bm GPS accuracy: 5m Time To First Fix: Cold status 45s, Warm status 35s, Hot status 1s Work voltage: 5 V Storage Temp: -40C to +85 C Operation Temp: -20C to +55 C Humidity: 5%--95% non-condensing Weight: 39g Package Included:1 X GPS Tracker TK2011 X Charging cable 1 X Manual