Rather than stacking the USB ports, the dual USB car charger splits the USB in a fork creating the Y shape which directs the ports towards the users (the driver and the passenger) as well as allowing for easier cable management. Charge either 1 tablet and mobile phone or 2 mobile phones at the same time. Output: 5V 2200mA. 3 1/4" L x 2" W x 3/4" H
Imprint Area: 1 3/4"x3/8"