... stored in the unit and will be kept even though power is off.15,Total mileage record for the current ... ±10mElectronic compass: east, north, west, south, northeast, southeast, northwest, southwestElectric power: DC12VElectric Current: 150 to 300mAWorking Temp.: -25°C to 85 ... 1)magnetic souction base (1)screwdriver (1)12 V DC car power adapter(1)USB update line(1)Primary Competitive Advantages:We ...