... ,PDB,NTX,RTF;3)Language:English,Russian,Polish etc.. 6'' E-ink ebook reader with 4GB e-book reader. 1) 6 inch ... Level Gray Scale5) Operating System: Linux (free)6) File System:FAT,FAT16/32 etc.7) Book File Formats: EPUB,TXT,PDF, FB2 ... Memory Card)9) Character Font:Mobil font etc.10) Language:English,Italian,Portuguese,Spanish,Polish,Russian,French,Korean,Chinese etc.11 ...