Touch screen user interface.3in screen size.Stores up to 4000 tracks.Up to 25 hours playback.DRM 9 compatible.Up to 5 hours video playback.Rechargeable via USB.8GB memory.Size (H)10.2, (W)5.7 (D)1.16cm.Ability to support lossless audio formats.Built-in XFi technology enhances sound quality of your audio and video files.Memory upgradeable micro SD card slot.Works with iTunes Plus content.