Characteristics: 1. Waterproof design for effective splash protection. Cannot be submerged in water. 2. Adopt built-in high speed ARM9 core. 3. Independent flip-book button, preview book chapters, thumbnail photos, easy to find what you want to read. 4. Reading Assistant, adjust the brightness of the font size, color and font to make it easier to read fatigue. 5. You can skip the page and add bookmarks. No need to re-read. Directly read the bookmark page added last time. 6. The integrated body design is as thin as 11MM, which is robust and durable. 7.7 inch ultra-clean electronic screen, sharp text, restoring paper reading experience. 8. Built-in music, video, photos and other multimedia functions. 9. Built-in 2100mAh battery, single charge can last for several weeks. Specifications: Speed: 380 MHz RAM: 512M Operating System: for uCOS Display Type: 7 inch TFT LCD Ratio: 16:9 Resolution: 800*480 Size: 7,0inch (oblique) Contrast: 400 (typical) Brightness: 250 cd'm2 (typical) Increased response time: 12ms, decrease: 18ms (typical) Top view: 30°-70°, bottom: 50°-70°, left: 50°-70°, right: 50°-70° External TF card for storage, up to 16 GB Battery: 2100 mAH E-book: 20 hours Music: up to 10 hours (backlight off) E-book and music: up to 6 hours Video: Up to five hours Charging time (5V, 500mA): 10 hours (approximately) System requirements: for Windows XP/Vista/Win 7/Mac 10.0 and above/Linux Storage temperature: -20℃-50℃/relative humidity: 5% to 95% non-condensing Operating temperature: -10℃- 40℃/ relative humidity: 5% to 95% non-condensing E-book format: EPUB, PDF, TXT, FB2, PDB Image Format: JPG, BMP, GIF, PNG Video Format: MPEG1, MPEG2, MPEG4XVID, DIVX, H.264, H.263, RM, RMVB, MKV, MOV, VOB, FLV List of packages: 1. reader 1)Charging cable 1)Headphones 1)Leather case 1. User manual 1. Does not support WiFi. 2. Do not attach to the power charger.