Feature:1. Monitoring The Battery Voltage: The voltmeter can timely grasp whether the battery voltage is within the normal use range, allowing you to know the battery condition in time and prevent problems before they occur.2. Dual USB Port: Designed with 2 USB port output, can be used with a variety of electronic devices that support USB, such as mobile phones, notebook computers, tablet, MP3, camera, etc.3. Wide Range of Application: USB car fast charger is suitable for all 1224V cars, motorcycles, yachts, boats, lawn mowers, tractors, etc.4. Waterproof Design: With a waterproof cover, the charger can be covered with a rubber cover when not in use, which can effectively prevent rainwater from entering and causing damage to the voltmeter.5. Smart Chip: Intelligent control chip, fireproof and high temperature, to avoid damage to the device during the charging process, the matte texture can better integrate with the car.Specification:Item Type: USB Car Charger AdapterMaterial: ABSColour: BlackInput Voltage: 12-24VOutput Voltage: 5VWith Light Power Socket Output Current: 1AUSB Charger Output Current: 2.1AApplicable Charging Range: Suitable for all 12-24V cars, motorcycles, yachts, boats, lawn mowers, tractors, etc..Package List:1 xUSB Car Charger4 x Screw4 x Terminal