Pretty good, look at the speed and the price too. Also the reviews look promising too!
4-Port USB charger for front and back seat: max output of 2.4A per port, 48w 5V / 9.6A total
Simple, small and elegant design. Environmental ABS material, super-compact form factor
Protection against over-heat, over-current, and over-charging. Charging will be automatically stop when battery is full
Provides maximum charging speed to devices for uninterrupted performance of navigation and media streaming
Package includes: JETech 4-Port USB charger with 1.8m extension cable, 6-month warranty