Features100 brand new and high qualityDigital realtime display, waterproof, low pressure and high voltage warning function.DC voltage measurement, makes your vehicle operate with normal voltage, extends the life of the vehicle.LED panel digital display, reading in seconds, more intuitive, fast and convenient.Mini size, easy to carry, does not hinder driving, ensures your safe driving.Easy to install with necessary accessories, hold the meter in place, firmly and not easy to move, perfect for checking voltage.The package contains1VoltmeterElectronic clockThermometerSpecificationsMaterial PlasticSize 1529.558.5mm 0.61.162.3 inchFunction voltage display, temperature display, clock displayNotePlease allow 13cm error due to manual measurement. Make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Connection method the red wire is connected to the positive electrode of the battery, the black wire is connected to the negative electrode of the battery, and the blue wire is connected to the main switchAfter powering on, the home screen appears and then the time is displayed. The initial time after powering off is 1200.The time is a 24hour system, the measuring battery voltage range DC8V72V, temperature range 30C70C