enTourage eDGe. Diagonal: 246.4 mm (9.7 "), Technology: eInk, Gray scale levels: 8 levels of grey. Document formats supported: pdf, epub, Audio formats supported: MP3, AAC, WAV, OGG, Video formats supported: MP4, WMV, AVI, 3GP, MOV. Internal storage capacity: 4 GB, Compatible memory cards: SD. Interface type: USB 2.0, Wireless LAN type: 802.11b/g. Operating system installed: Linux, Bundled software: Google Android