Display technology: 6-inch E-ink Vizplex Display engineer: Epson S1D13521 Gray scale: 16-level gray scale OS: Linux 2.45 CPU: dual core 400MHz Resolution: 800 x 600 pixels Dimension: 180 x 120 x 10.5mm Weight: approximately 200g Text: TXT/EPUB/FB2/PDF/DOC/XLS/PPT/CHM/HTML/DJVU/RAR/ZIP Image: JPG/BMP/JIF/PNG Audio: MP3/WMA/AAC/OGG/APE/FLAC Language: support 16 languages include English, Spanish, Russian and others Inner memory: 2GB Extend memory: SD card 1 - 16GB Power supply: detachable standard Nokia BP-4L, 1,000mAh (maximum 1,500mAh) lithium ion battery Power management: high-integration and uniform power management unit Supports wireless 802.11b/g (optional) Supports TTS (optional) Colors: black Special features: Low power consumption, sustain up to 5,000 pages reading Provides C/C++ SDK available for customer developing application by themselves Provides document DRM SDK for source supplier Supports reflow in PDF, cutting board Supports customization of fonts, letter spacing, and line spacing Supports multilevel scale and page skip, 8 bookmarks for reading Silica gel keyboard in laser engraving, comfortable feel Supports TFT file, customization of fonts and the fynamic font name