Product Main Features: Using digital liquid crystal display, the reading of dates are intuitive, fast and accurate. Readings can be switched to different reading units according to requirements and usage habits. LCD display with backlight, in the environment when the light is weak can the value. Automatic and correction, to use when it is activated. Built-in tread depth ruler, convenient to check the tire tread depth while repairing tires. Automatic power off. Product DY19 Intelligent digital tire inflator is a multifunctional tool designed for vehicle tire maintenance and repair, which can inflate and deflate vehicle tires, detect tire pressure, and detect tire tread groove depth. Material: ABS colour: As shown Package Contents: 1 x Digital Tire Pressure Test Tool kit 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.