Eink display 6-inch E-book reader with 8-level gray scale, 800 x 600 pixels resolution, and low power consumption Main display: 6 inch E-ink panel Display controller: Epson display controller Back light: no back light without no any radialization Display size: 6 inch (800x600) Processor: Arm8 Core (JZ4770) Operating system: Linux2.6 RAM memory: SDRAM 64MB Battery: Li-ION 1,200mAh Battery life: 11,000 screen refresh (est. 3 months based on reading speed of 500pages per week) I/O: 3,5mm stereo audio jack for earphones USB port NO built-in speaker Connectivity: HS USB Client Built-in WIFI (IEEE802.11b & g)(optional) Storage memory TF card (up to 8GB, support SDHC) Format support (with cyrillics supporting): TXT, DOC, CHM, HTM, HTML, PDF, JPG, JPGE, BMP, GIF, MP3 Audio format support: mp3 (32kbps-384kbps), wma (32kbps-192kbps) Font size changing function 5 sizes Other features search book by filename, auto-resume, bookmarking Page number indication yes Accessories: USB cable, charger (power supply), user manual, case, earphones Language: Simplified Chinese Built-in speaker FM Greyscale 8 level CE, RoHS approved