Small size, compact structure. Plug and never unplug Stable wireless connection via bluetooth 3.0. No wires or batteries (adapter is powered by the 12V Vehicles battery) 30 Minutes without communication, it will automatically go to sleep mode. Ultra low cumsumption in sleep-mode, less than 10MA Supports ALL OBDII protocols, widest coverages The adapter uses the fast communication mode and most reliable PIC18F25K80 chips, up to 30PID/S. True ON-OFF button, you can press button to turn off the if not in use. V1.5 (Bluetooth) Function List: 1.Read diagnostic trouble codes, both Universal and manufacturer specific 2.Clear trouble codes and turn off the ("Check Engine" light) 3.Display current sensor data, including: 4.Engine RPM 5.Calculated Load Value 6.Coolant Temperature 7.Fuel System Status 8.Vehicle Speed 9.Short Term Fuel Trim 10.Long Term Fuel Trim 11.Intake Manifold Pressure 12.Timing Advance 13.Intake Air Temperature 14.Air Flow Rate 15.Absolute Throttle Position 16.Oxygen sensor voltages/associated short term fuel trims 17.Fuel System status 18.Fuel Pressure Colour:Black Material:plastic Package Contents: 1 x Car diagnostic instrument Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.