Intelligent Voice Prompts : Under 6 Alarm modes, TPMS will have voice prompt to Broadcast Tire problem, no need to stare at the monitor screen to confirm which problem when driving, offer a safe and confortable driving travel. 4 External Sensors : Sensors are waterproof , you can also use it in the raining days. Car tire pressure is high sensitive of tire pressure and temperature and transmit data to LCD screen. It is really concerning for your safe and convenience. Solar power and USB rechargeable : All weather monitoring, tyre pressure can be charged by solar when sunny day, tyre pressure monitoring system also can be charged by USB cable when it is rainy cloudy day. Tyre pressure gauge is really convenient and energy saving. 6 Alarm Modes Rocboc tire pressure monitoring system boasts accurate data, real-time display.Visual and audible warning for fast leak alarm, slow leak alarm, high pressure alarm, high temperature alarm, sensor fault alarm and sensor battery low power alarm, ensure safe driving. Easy Installation Self-Install in 10 Minutes: Wireless transmission design and 4 cap external sensors make the car tyre pressure monitor easy to install on your vehicles, no need to disassemble your tires.Suitable for tire pressure range less than 3.5 Bar, like sedans, SUV, MPV and etc.