XYZ Boat Supplies Waterproof 4.2 Amp Dual USB Charger Socket for Boat/Car/ RV/Motorhome/ Motocycle (Grey) XYZ Boat Supplies Dual USB Charger Compatible with popular mobile devices. Easy to use and install 12 - 24 Volt DC input Max output charge 4.2A total Output Voltage 5V DC+/- 5%