Features:100% DIY.Waterproof digital LED voltmeter.Input 12V-24V， fit for motorcycle， car， truck， boat， etc.Can test voltage between 6-30V， let you know the health situation of battery anytime.Easy to install， convenient to use.Specifications:LED Light Color: Blue， Red， Green (optional)Material: PlasticInput voltage: 12V-24VPanel Dimension: approx. 5 * 2.5cmCable Length: approx. 43cmPackage Size: 9 * 7 * 3cm / 3.5 * 2.8 * 1.2inPackage Weight: 22g / 0.8ozPackage List:1 * LED Digital Display Voltage Voltmeter