Feature:-Solar charging, no need to connect the car cigarette lighter to charge-Color LCD digital display can clearly display tire information-Real-time monitoring of the pressure and temperature of 4 tires-Low air pressure/high temperature alarm-High temperature/leak/low battery alarm-Smart shockproof cover when driving, no need to open/close-Wireless connection with sensor, easy to install-Internal sensor and external sensor options to meet all your needs specification:Material: ABSDetection pressure range: 0-3.5 barApplicable models: 12V vehicles-4barDisplay mode: digitalTyre pressure gauge type: electronicTyre pressure gauge type: pressure monitoring systemCharging method: solar, USBTire pressure gauge accuracy type: high precision Package content:main unit * 1,built-in sensor * 1,manual * 1, accessories Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.