Solar power and USB charging, no need to charge via car lighter Colorful, clear LCD digital screen displays tire information Real-time monitoring of pressure and temperature for all four tires Low air pressure and high temperature alarm High temperature, leak, and low battery alerts Smart activation when vehicle is in motion, automatic on/off Wireless sensor connection for easy installation More stable and accurate performance Resistant to high temperatures and cold environments IP67 rated waterproof protection Battery life up to 2 years, replaceable How to replace the external sensor battery: 1. Remove the dismantling gasket 2. Use a wrench to open the sensor 3. Remove the old battery 4. Install a new battery Solar charging and USB charging with low power consumption 1: Tire abnormality alert 2: Leak prediction 3: Tire pressure warning 4: Audible beep alert 5: Solar charging indicator 6: Waterproof and dustproof design 7: Simultaneous display for all four tires 8: Helps reduce tire wear Note: Product design may vary slightly between batches. Minor differences in color or appearance may occur but do not affect functionality Easy to install and replace Operating temperature: -20C to 80C Type: External sensor Color: Black Material: Plastic Package includes: 1 x Tire Pressure Monitoring System 4 x Sensors 1 x USB cable Content limited to items listed; other accessories not included Note: Lighting and screen differences may cause slight color variation between image and actual product. Measurement error allowed within +/- 1-3 cm