Features: 1.Solar charging, no need to connect the car cigarette lighter to charge, wireless connection with the sensor, easy to install, attached to the glass. 2.Color LCD digital display, clearly display tire information, real-time monitoring of the pressure and temperature of 4 tires. Day and night are very clear, and the receiver can display the time and monitor tire pressure and temperature in real time. 3.With alarm function, low air pressure/high temperature alarm, high temperature/leak/low battery alarm, intelligent shockproof cover when the car is driving, no need to open/close. 4.The internal sensor and external sensor options can meet all your needs, two units (PSI / Bar) are variable, you can set a unit you like. 5.Solar charging + USB charging, new energy solar charging provides working power. High power transmission and high performance. Specification: Item Type: Tire Pressure Monitor_x000D_ Material: PC+nylon plus fiber/copper nozzle_x000D_ Host Parameters: _x000D_ Host Built-in Lithium Battery: Capacity 280mAh, Model 402040_x000D_ Display: Pressure, temperature, air leakage alarm_x000D_ Frequency: 433.92MHz20.00MHz_x000D_ Working Temperature: -20-80_x000D_ Storage Temperature: -30-85_x000D_ Charging Method: USB+solar_x000D_ Lithium Battery: 280mAh_x000D_ Charging Voltage: DC 5V_x000D_ Factory Default High And Low Pressure Values: 3.0Bar-2.0Bar_x000D_ Working Current: 5MA_x000D_ Factory Default Temperature Value: 68_x000D_ Installation Location: Center console_x000D_ _x000D_ Sensor Parameters: _x000D_ Button Battery: Capacity 60mAh, model CR1632 (included)_x000D_ Waterproof And Dustproof Rating: IP67_x000D_ Frequency: 433.92MHz20.00MHz_x000D_ Sensor Pressure Range: 0-3.5BAR_x000D_ Storage Temperature: -30-85_x000D_ Accurate Pressure: +/-0.1Bar_x000D_ Accurate Temperature: +/-1_x000D_ External Working Temperature: -20-80_x000D_ Built-in Working Temperature: -40-120_x000D_ External Battery: CR1632 (NOT Included)_x000D_ Built-in Battery: CR2050 (Included)_x000D_ Instructions For Use: Plug and play