Qi-Compliant - Able to charge any Qi-compatible device with an embedded chip or back cover / case * 1 X Inductive charging positions; 1 x USB 2.0 charging port compatible for all cellphone with 5V output * Wireless inductive charger with built-in 6000mah battery, you can take it with you for easy charging when you are on the go * The grey rubber ring provides any kind of grip or slip resistance so your phone will not slide around (Raised rubber ring prevents the phone from slipping off) * A beep sound is a nice confirmation when it has connected and being charged. Intelligently automatic turn it off when you leave the charging pad alone for around 50 seconds.. Attention: if you use the charging pad on battery power, it will keep charging your phone and eventually drain the 6000mah QI wireless charging pad, so make sure you take your phone off and the pad aren"t plugged in when it"s fully charged