Specification: Item Type: Switch Panel Material: ABS and Metal Colour: Black Input Voltage: 12-24V Output Voltage: 5V Output Current: 2.1A Applicable Charging Range: Suitable for All 12-24V Cars, Motorcycles, Yachts, Boats, Lawn Mowers, Tractors, Etc. Package List: 4 x Car 1 x Voltmeter 1 x USB 1 x Panel 4 x Screw 13 x Shrinkable TubeStrict factory inspection: Every product that arrives in your hands undergoes strict factory inspection to ensure quality and safety. Please rest assured to buy and use.Welcome to your inquiry. Perfect design: using intelligent control chip, fire and high temperature resistance, can avoid damage to the equipment during charging. With a waterproof cover, it can effectively prevent rainwater from entering and causing damage to the voltmeter. Rugged and durable: It is made of 100% brand-new high-quality materials, has the characteristics of wear-resistant, durable, not easy to damage, flame retardant, high temperature resistance, resistance, long service life, etc., and it is very cost-effective. Perfect compatibility: It is designed according to the original standard, you can directly replace the old or damaged original accessories, so as to be perfectly compatible with your car. It can grasp whether the battery voltage is within the normal use range in time, can be used with USB, support a variety of charging electronic products, and the dual-port output is very convenient. Wide application range: suitable for all 12-24V cars, motorcycles, yachts, ships, lawn mowers, tractors, etc. The matte texture can better integrate with your car and decorate the interior of your car well.