Features: Dual Charging Methods: Solar charging and magnetic charging. Solar charging is energy-saving and environment-friendly. The monitor is equipped with a solar panel, which can be charged at any time, eliminating the tedious wired charging. Magnetic charging is convenient. Sensitive and Quick Response: External sensitive sensor, anti-interference, sensitive monitoring of tire pressure changes in different environments. Value display is fast and accurate, timely monitor the condition of motorcycle tyres. Alarm Warning: High volume alarm. Displayable data: Front tire pressure, rear tire pressure, front tire temperature, rear tire pressure. battery state. Energy Saving: After the motorcycle is stationary for 10 minutes, monitor will automatically sleep and enter the working mode automatically after feeling the vibration. Easy to Install: The package includes wrench, installation takes just a few minutes, No need to remove tires. Specifications: Material: ABS Operating Voltage: 3.7-5V Battery Capacity: 500MAH External Sensor Battery Cell: CR1632 RF Signal Reception Sensitivity: -90dbm Operating Temperature: -20 C~75 C Storage Temperature: -30 ~80 Frequency: 433.92MHz 50.00MHz Operation Screen Display: Large LCD Screen Monitor Size: 50*53mm Package Weight: 16*13*5cm Package Size: 223g Package List: 1 * Monitor 2 * External Sensors 1 * Mount Bracket 2 * Nuts 1 * Nut Wrench 1 * Charging Cable