System and interface control chip JZ4740 360MHz Interface Mini USB 2.0 (charging), headphone, SD card slot Support multi-threading support Operating System Linux Linux 2.6.24.3 2.6.36 NAND Flash storage media Capacity 2G Extended Storage SD / SDHC, up to 4G Support File System FAT16/FAT32 Screen sizes Eink 6 "(4:3) 800 x 600 resolution Color 16 gray levels E-ink screen material Operation buttons Audio file formats MP3, WMA, WAV Text support Text format TXT, HTML, PDF, EPUB Picture Supported formats JPG, BMP, PNG WIFI WIFI Module Interface PCB reserved Battery Type Lithium Battery 1400mAh Book page number> 8'000 pages Charging time of 5 hours Charger 5V/1A Language support Language Chinese, English, Japanese, Korean, Russian, French, Spanish