Smart Charging Technology automatically identifies connected devices and their unique charging requirements. Every port of the USB charging hub delivers exactly the right amount of power to match your devices needs. Charge multiple devices such as smart phones, tablets, headphones, Echo dot, kindle, external battery chargers without the clutter of cables and wires. Anti-slippery base keeps 6-port USB charger stable and prevent the charger from moving on your desk. Multi-Protect safety system and premium grade circuitry ensures complete protection for you and your device. 110V to 240V input for use all over the world.