1-Dual USB sockets 2.1A and 1A with built-in LED voltmeter + 12V power socket + ON-OFF toggle switch. Panels are pre-wired, including 4 stainless steel screws. 2-Digital voltage display helps monitor the electrical safety of the vehicle. 3-Applicable to 12-24V cars, ships, motorcycle, ATV, RV, etc. 4-Suitable for charging mobile phones, GPS, digital cameras, tablets and other USB accessories. 5-12V power socket can be used with any standard lighter plug or lockable marine plug. 6-IP65 waterproof rating, made of high temperature resistant nylon flame retardant material. Specification: Type: Dual USB Charger Power Socket Panel. Material: Nylon+High Quality Plastic. USB Socket Input: 12-24V. USB Socket Output: 5V/2.1 And 1A. Waterproof Rating: IP65. Color: Black. Features: Digital Voltage Display. With 1: Built-in LED voltmeter. With 2: 12V Power Socket. With 3: ON-OFF toggle switch. Package Included: 1 X Dual USB Charger Power Socket Panel. 1 X Set of Accessories