Item Description Display 6 inch E-ink Panel, 800(H) * 600(V), 8 Grayscale Format support (book) BOOK: PDF, TXT, CHM, HTML, PDB, FB2, EPUB, ADOBE DRM, GOOLE EPUB Picture: JPG, BMP, PNG, TIF, GIF Music: MP3, WMA, WAV Font size changing function 7 sizes Storage Memory 1G default SD card up to 16G Language English, French, Spanish, Chinese (can be customized) Power Consuming "Less than 200mA 3.3V at EPD refresh time. Less than 2.0 mA 3.3V at sleep time, it can show more than 8000 pages continuously with full charged battery." Power supply Battery Type: Rechargeable Lithium Polymer, 1100mAh, 3.7V Recharging time: Approx 4 Hours with USB charging from powered Computer Approx 2 Hours when using AC wall charger AC Power: AC Charger requires 100-240V, 50-60Hz, 1000mA Temperature Operating temperature:0/+40 Degrees C Storage temperature: -20/+55 Degrees C Other feature Search book by filename, auto-resume, go to page, bookmark, clock Dimension 176.9*120.5*11.5mm Colors White and Black. Oredr up to 500pcs, color can be made-to-order.