X70 OBD is a smart and multifunctional speedometer that can read the real-time data output by the car's ECU, so that the driver can see the car's data at a glance while driving, avoiding the potential danger caused by looking at the instrument. Power Supply: DC12-30V Voltage Measurement Accuracy: ±0.5V Driving Speed Accuracy: ±0.05 Km/h Coolant Temperature Accuracy: ±0.5 Celsius Easy to Use and Install: Step 1: Plug the OBD adapter into the car. Step 2: Hide the power cord in the seam inside the car if necessary. Step 3: Plug the data port into the X70 OBD. Color: Black Material:ABS Package Contents: 1 x X70 OBD Speedometer Only the above package content, other products are not included. Note: Light shooting 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 +/- 1-3 cm.