... -ink screen to some extend. 5.Supports file formats: TXT, HTML, PDF, EPUB, PDB, FB2, CHM, RTF,TCR, OEB, OPENREADER6,Support ... ( Engine )USB 2.0 (charging)Internal Memory256MBButtonTBDSpeakerAvailableFile Format CompatibleText:TXT, HTML, PDF, EPUB, PDB, FB2, CHM, RTF,TCR, OEB, OPENREADERImage:JPG ... x 124 x 11.5mmWeightApproximately 270g(Not Contain Battery) E-BOOK,with multi-functions