Suitable for motorcycles, cars, boats, RVs, caravans, etc. Screen: 3 bit, LED digital tube, Works for 5-48V. Mini size and easy to install, ideal for testing voltage. A nylon retaining nut keeps the meter secure. 3.7 x 2.9 x 1.5cm For monitoring storage battery voltage, with reverse polarity protection function, the cable will not be burned. Note: The data is manual measurement, please allow 1-61cm error, due to differences in light and screen, there will be a certain color difference, the specific subject shall prevail.