The CyberPower TR22U3A USB Charger includes two USB ports (3.1A shared) to quickly charge and power mobile devices on the go using your vehicle's 12V DC power outlet. This USB charger is perfect for tablets, smartphones, MP3 players, digital cameras, and similar mobile devices. The TR22U3A is backed by a one-year limited warranty. Includes two USB ports to rapidly charge and power your mobile devices Compatible with your vehicle's DC adapter Compact design fits neatly in backpacks, briefcases and luggage Includes 1-year limited warranty