Five Oceans Waterproof 12V/24V Double USB Socket FO-3656 4.2A Dual USB Power Charger, Great for charging your Phones, Tablet, Android Devices, PDA, GPS IP66 Waterproof, CE and Rohs Certify, Full Competence for Outdoor Usage and Marine Task Output Voltage: 5V/2.1A LED Power indicator Input Voltage: 12 - 24V DC