Connect to your 12V system AND charge USB devices at the same time.The Marinco SeaLink Deluxe Dual USB Charger and 12V Receptacle features two ports to charge cell phones, tablets and other devices powered by USBs, a blue LED to show that power is available, a 12V receptacle that is rated to 20A and is compatible with standard 12V plugs, and water-resistant covers to prevent water and dirt from entering the ports.The Dual USB has a 12V to 24V input with a 5V output and a total of 2.1A output between the two ports. An ideal solution for your onboard USB charging needs.Designed for longevity in the marine environment, the SeaLink 12V family of products is manufactured from corrosion-resistant marine grade materials.12V DC inputDual USB has 5V, 2.1A total outputBlue LED power indicator light for USBReceptacle has 12V DC output, rated up to 20AWater-resistant covers protect against dust and waterInsulated terminals includedOperating Temperature: -4F (-20C) to 140F (60CDimensions: 1 3/4"W x 4 1/8"L x 2 1/16"D (44mm x 105mm x 51.2mm)Cutout: Two 1 3/8" (35mm) diameter round holes on 1 3/4" (45mm) centers