3.4A 4USB Car Charger Adapter with 1 Card Holder.
On/off switch for Socket,Voltage detection.
Full Protection: Built-in 10A fuse, protect your devices from over-voltage under-voltage, overload, over-current, overheating.
4-IN-1 Design: Combined car battery monitor, current monitor, cigarette lighter socket and USB charging into one compact, space-saving design.
4USB Ports:4USB ports can automatically detects your devices to deliver its optimal charging speed up to 3.4A in total, great for your iPhones, iPads, tablets, MP3 players, cameras, and other mobile devices.