1Solar and USB Charging: Two charging methods ensure higher charging efficiency, ensure that solar tire pressure monitor system can work continuously. 2Display: With Lcd high precision liquid crystal display, clear information display, whether it is day or night, you can easily read tire status data, ensure safe driving. 3Function: Equipped with 2 tire sensors, which could accurately monitor tire pressure and tire stability, when the tire pressure is out of whack, you will get loud volume alarm. 4High Accuracy Sensor: The tire pressure sensor has long receiving distance with stable signal, and support tire position swap, with high accuracy, sensitivity and long battery standby time. 5Easy Installation: The package is equipped with anti theft nuts, wrenches, USB charging cables, instructions and other accessories to ensure fast installation.