Features: Real-time monitoring of pressure and temperature for 4 tires; Low air pressure and high temperature alarm; High temperature, leak, and low battery alerts. Smart auto-start when the vehicle is in motion, no manual on/off required; Wireless connection via external sensors for easy installation. Wireless connectivity with sensors allows for simple setup; USB charging provides convenient and practical power supply. Colorful LCD digital display clearly shows tire information. Built-in vibration sensor automatically turns the device on when the vehicle starts and off when the vehicle stops. Specifications: Material: ABS Size: Approx. 5.2 x 5 x 3.8 cm / 2.04 x 1.96 x 1.49 inches Color: Black Note: Please allow 1-2 cm errors due to manual measurement; ensure you are comfortable with this before ordering. Due to differences in monitor displays, the picture may not reflect the actual color of the item. Thank you for your understanding. Package includes: 1 Set Tire Pressure Monitor