GIZGA DC 12V Digital Voltmeter Chargers WaterProof Marine Car Boat Outlet Socket Boat Car Auto Motorcycle Trucks for Motorbike Car Boat Travel Trailer ATV UTV Camper Caravans 12V-24V Car Motorcycle LED DC Digital Display Voltmeter Waterproof Meter Display Color: Red Material: Plastic Shell Measuring range: DC 12V-24V Size: 3.5 x 2.7cm(L x D)