Features: Real-time digital display, waterproof, low pressure, high voltage warning function. DC voltage measurement, make your vehicle work at normal voltage, prolong your vehicle's service life. LED panel digital display, reading in seconds, more intuitive, quick and convenient. Mini size, easy to carry, won't obstruct riding, guarantee your safe riding. Easy to install with necessary fittings, hold the meter in place, fix tightly and not easy to move, great for checking voltage. Made of premium quality material, flame retardant and environment-friendly, safe and durable. Specification: Voltage: DC 6V-30V Function: voltmeter+electronic clock+thermometer Display: LED Material: Acrylic Waterproof degree: IP67 Color: Black Power line length: 0.48m LED Color: Red/Blue/Green optional Package Size: 11 * 10 * 10cm / 4.33 * 3.94 * 3.94in Package Weight: 55g/1.94oz Packing List: 1 * Voltmeter Wiring mode: The red and black lines are the postive pole and the green line is the negative pole.