The item is a portable and practical LED digital display DC voltmeter, which is designed to measure and monitor battery voltage and know its running status, and can also be applied to measuring the voltage of other products. The DC voltmeter adopts LED light to display the measuring voltage for easy to read, and it has switch button for safe and convenient operation. Features - LED color: Red. - Material: Flame-resistant ABS plastic. - Size: 6.2 * 6.1 * 3.3cm. - and Car Motorcycle LED Digital Display DC Voltmeter. - Measuring voltage range: 6V-30V. - Used to monitor the storage-battery voltage. - Adopts LED digits to display the measuring voltage. - It has switch button for safe and convenient operation. - With reverse polarity and short-circuit protection function, to make the wire not be burned. - Range of application: cars, motorcycles, boats and other automobile.