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 Display: LED Material: Acrylic Waterproof degree: IP67 Color: Black 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 wire is connected to the battery positive pole, the black wire is connected to the battery negative pole, and the blue wire is connected to the main power switch Flicker warning function for low voltage (below 12V) and high voltage (above 16V