Feature: 1. [Sanding Treatment] Frosted texture. It can better integrate with your car and match your car better 2. [Waterproof Design] With waterproof design, it can effectively prevent rainwater from entering and damage the voltmeter 3. [Intelligent Control] The intelligent control chip can prevent fire and high temperature and avoid damaging the equipment during charging 4. [Dual Port] Double port output, with waterproof cover. When not in use, it can be covered with rubber cover to prevent dust and water 5. [Scope of Application] Can be used with USB to support a variety of charging electronic products. Applicable to all 12‑24V automobiles, motorcycles, yachts, boats, lawn mowers, tractors, etc How to Use: Plug and play Specification: Item Type: Car USB Charger Material: ABS Color: Black Input Voltage: 12-24V Output Voltage: 5V Output Current with Optical Power Take Off Base: 1A Usb Charger Output Current: 2.1A Applicable Charging Range: Applicable to All 12-24V Automobiles, Motorcycles, Yachts, Boats, Lawn Mowers, Tractors, Etc. Size: Approx. 150 x 43mm / 5.9 x 1.7in Package List: 2 x Car Charger 1 x With Optical Power Collection Base 1 x Support 6 x Heat Shrinkable Tube 4 x Screw Note: Please allow 0-2mm error due to manual measurement. Thanks for your understanding.