USB Docking Cradle Kit w/ Battery Slot for Motorola Photon 4G Custom-fitted cradle lets your phone sit comfortably on your desk Charge your phone and transfer files via USB connection Watch videos, listen to music and run apps such as your alarm clock, weather, stocks or photo gallery - all while your phone is being charged. Battery slot lets you charge a second battery by itself or at the same time with your phone Comes with an AC power adapter to charge your phone if you don't have a computer/laptop USB connection available; Horizontal orientation - phone switches to landscape display mode