Qi Wireless Charging With QI standard wireless charging function, more safe to use. ( Please Note that it is for Samsung / Nokia / Nexus / HTC / LG Qi standard devices. ) 2.1A Max Output Supports rapid charging for mobile phones and tablets, ensuring stable transmission for high power devices like portable HDDs. 4-Port USB Hub Capable of connecting with 4 devices at the same time. USB 3.0 Standard Transfer data at up to the 10 times the speeds of older USB 2.0. What a time saving for the large file. Intelligent Protection With over-charging, over-current, over-temp and other protection, the Hermit is fully compatible with iOS, Android, and Windows Phone. Specifications Brand NILLKIN Input 5V 5A Output 5V 4.5A USB Output 5V 2.1A Wireless Charger Output 5V 1A Product Size 9.5L x 9.5W x 2.6H cm Package Contents 1 x Hermit Charger