E-Book Readers features: Alloyseed bk4304 ultra thin ebook ereader 4.3 inch oed e-ink screen digital e-book reader 4gb/8gb/16gb electronic book readers(4gb) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Colour:4gb Specification: Model: BK4304 Architecture: Arm 9 + DSP LINUX Speed: 380 MHz RAM memory: 512M Operating system: UCOS Control interface: mechanical switch, arrow key Display type:4.3 inch OED, 4:3 ratio Resolution: 800 x 600 pixels Size: 4.3 inch (diagonal) Surface Treatment: Anti Glare Built in storage: 4GB / 8GB / 16GB (optional) E-book format: EPUB,FB2,HMTL,PDB,PDF,RTF,TXT,UMD,DOC Photo format: JPG, BMP, GIF, PNG Data transmission: Micro USB 2.0 High Speed Battery: 1200mAh Storage temperature: - 20 ° C ~ 50 ° C / relative humidity: 5% to 95% non condensing Operating temperature: - 10 ° C ~ 40 ° C / relative humidity: 5% to 95% non condensing Package size: 150 * 113 * 34mm/5.9*4.44*1.33'' Weight: 210g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. 1 X Ebook Reader 1 X USB Cable 1 X PU Cover 1 X User Manual