Trekstor eBook Reader 3.0. Diagonal: 177.8 mm (7 "), Technology: TFT, Display resolution: 480 x 800 pixels. Document formats supported: ePub, FB2, PDF, TXT, Audio formats supported: MP3, OGG, WAV, WMA, Image formats supported: BMP, GIF, JPG. Internal storage capacity: 2 GB, Compatible memory cards: microSD (TransFlash), microSDHC, Maximum memory card size: 32 GB. Interface type: USB 2.0, Headphone connectivity: 3.5 mm. Battery life (max): 30 h, Battery technology: Lithium Polymer (LiPo), Battery recharge time: 4 h