... with the ordinaryFSTN screen. It can compete with e-ink screen to some extend. 5.Supports file ... formats: TXT, HTML, PDF, EPUB, PDB, FB2, CHM, RTF,TCR, OEB, ... 2.0 (charging)Internal Memory256MBButtonTBDSpeakerAvailableFile Format CompatibleText:TXT, HTML, PDF, EPUB, PDB, FB2, CHM, RTF,TCR, OEB, ... .5mmWeightApproximately 270g(Not Contain Battery) E-BOOK,with multi-functions