317984 Features: 1. Brand new and high quality volt meter 2. Easy to operate and install 3. Widely used in automobiles， trucks refit parts， it can be combined freely with other parts. Color: Black Material: ABS Size: about 6 x 5.5 x 2 cm Operating voltage: 12V Screw mounting hole: about 4.0mm Display: digital display Display color: red 1 x 12V Universal DIY Car Volt Meter In original pakcage