Quick Charge 3.0 + 3.1A: The QC3.0 charger charges compatible devices up to four times faster than conventional recharges. while 3.1A charges up to 3 times faster than conventional chargers. This allows you to charge two smartphone or tablet devices simultaneously at maximum speed. Multiple protection: The USB charger can automatically identify any USB device. When the battery is full, it will automatically stop charging, prevention of overcharging, overcurrent, overheating or short circuit, ensuring driver's safety. Wide compatibility: one USB 3.0 QC port + one 3.1A port, which can quickly charge two smartphones or two tablets at the same time. Designed for almost all devices, smartphones, tablets, Action Cam, other cameras, MP3 players, portable speakers, Powerbank, electronic cigarettes, etc. Portable and lightweight: can take up very little space, never get in the way of driving. Saves space and clarity when charging devices and is ideal for car travel Smart Design: The case is made of high quality ABS flame retardant material, which allows you to charge your phone safely security. Thanks to the USB slots of the LED light bar, you can connect your devices to the car charger even in low light conditions.