For Garmin Nuvi 300T 310T 350 360 370 510 550 650 660 670 680 710 750 760 770 GPS Live LIFE-TECH Dual 2.4A USB Car Charger Adapter High quality smooth glossy black finish with dual blue LED charging port. Simply use a compatible usb cable for your device to get charge up from this charger. (USB Cable sold separately.) 5.0V ~ 2400mah Output IC Chip recognizes a full battery & automatically switches to saver mode Elimate excessive space by bulky charger with this slim and compact usb charger. Lenght from bottom to top of the tip is only 2.5 inches.