This tire pressure monitoring system is compatible with most bicycles, electric bicycles, motorcycles and so on, display tire pressure and temperature, improve riding safety. Features: Digital display of tire temperature, tire pressure and time, real-time monitoring of tire condition, alarm flashing light in-case-of abnormality, effectively improve the service lifes of tire, increase riding safety and save energy consumption. Intelligent chip, quick and effective induction processing data, can quickly and accurately alarm when the tire pressure is abnormal, anti-interference, low power consumption, long lifes. Starts and stop mode, save energy and effort. When the car is stationary for about 10 minutes, it will automatically enter the sleep standby state. When it is affected by vibrations, it will automatically enter the working state. The driving state display screen is constant, so there is no need to manually, saving energy. A variety of alarm tips, including high pressure alarm, low pressure alarm, high temperature alarm and power alarm. Waterproof and dustproof, can also be used in rainy weather, magnetics chargings design, convenient and long service lifes. Large battery capacity and long battery lifes. Strong signal reception, real-time data transmission, no interference, able to deal with a variety of harsh environments. Widely applicable, compatible with a variety of models, suitable for most bicycles, electric bicycles, motorcycles, heavy locomotives, etc. Small size, easy to carry and install, no burden on riding. Specifications: Material: plastics+metal Color: black Battery: CR1632: 3V, 150mAh Item size: 53 * 53 * 30mm / 2.1 * 2.1 * 1.2in Item weight: 180g / 6.3ounce Package size: 100 * 100 * 50mm / 3.9 * 3.9 * 2.0in Package weight: 220g / 7.8ounce Packing List: 1 * Monitor Host 2 * Sensor 1 * Bracket 1 * Chargings Cable 1 * Installation Accessories 1 * Specification