Perfect for anyone who fears losing their phone car charger and being left without a way to power up while on the road. Pick up one, two or three keep them at work in your desk, in the utility drawer at home, even keep in your bag so you're never without it. Travel smart next time bring along an extra AT&T Vehicle Charger with USB Port. The universal USB port and Auto Detect IC Technology means it's compatible with most devices, smartphones and tablets.