1.Small,easy to use 2.Car cigarette lighter voltage meter 3.ThreeLED red digital pipe display 9V to 30V Red LED Display Car Cigarette Lighter Voltage Meter for Automobile Motorcycle Introductions:1. The design is small and easy to use, insert car cigarette lighter socket car battery voltage value can be measured;2. High brightness LED three red digital pipe display, convenient to watch3. Always ...