Uupower Charger Cradle Charging Station Data Sync Dock Stand Holder for iPhone 4 4S Data Sync Cradle Stand Holder Dock Docking Charger Charging for iPhone 4G 4 4S Small and light, easy to take away,Used to charge and data transfer.Also can be connected with audio cable to play music via sound box Unique Design for Apple iPhone 4 4S not 3G 3S Elegant and compact designed white docking cradle, perfect for your iPhone 4 4S Also connect the Dock to an electrical outlet using a USB Power Adapter.