Woxter Scriba 160. Diagonal: 152.4 mm (6 "), Technology: E Ink Pearl, Gray scale levels: 16 levels of grey. Document formats supported: DjVu, DOC, ePub, FB2, HTML, MOBI, PDB, PDF, RTF, TXT, Audio formats supported: AAC, APE, FLAC, MP3, OGG, WMA, Image formats supported: BMP, GIF, JPG, PNG. Internal storage capacity: 4 GB, Compatible memory cards: microSD, Internal RAM: 64 MB. Interface type: USB 2.0. Battery technology: Lithium Polymer (LiPo), Battery capacity: 1200 mAh