Mediacom Jerry-book E60. Diagonal: 152.4 mm (6 "), Technology: E Ink, Gray scale levels: 4 levels of grey. Document formats supported: DOC, FB2, HTML, PDF, TXT, Audio formats supported: AAC, MP3, WMA, Image formats supported: BMP, JPEG XR. Internal storage capacity: 2 GB, Compatible memory cards: SD. Built-in processor: RK2705. Battery life (max): 20 h, Battery technology: Lithium Polymer (LiPo), Battery capacity: 1200 mAh