Compatible with :Samsung Galaxy S3 i93003-in-1 USB Data HotSync Charging 2nd Battery Charger Dock Station for Samsung Galaxy 3 Smart PhoneSuperSpeed USB 3.0 5Gbps Data Transferring Rate Charge your phone and one battery at the same time with Ultra fast charging speed Support handsfree view of the phone screen while being charged on the stationSpecial bottom can keep the station from slipping awayHandy and easy to carry If your Galaxy S3 phone is with hard case, just removing the plate of the dock and then plug into the charging connector directly.Package included :1 x Dock Charger 1 x USB Cable