Feature: Brand new and high quality Good overall performance, high impact strength, good heat and flame resistance With fixed bracket, suitable for installation and fixing of various car models High-quality LED wick, good brightness, full color, multi-color wick running bead design, visual display of different voltage states IPX6 waterproof level, meet the rainwater in the daily driving process of the locomotive Wiring instructions: the red wire is connected to the positive pole , and the black wire is connected to the negative Real time monitoring voltage to understand battery state If the voltage of locomotive is too low or too high,the battery condition of locomotive can be monitored in real time Specification: Material:Plastic Power supply: DC12V Display Color: Blue, red, green Operating temperature: -10C to 65C Input impedance:100K Size:5.0cm/1.97inch x 2.8cm/1.10inch x 1.9cm/0.75inch. Package Included: 1 x Motorcycle Volt Gauge Meter