Feature: 1. 800x480: The E reader has a 7in HD color screen with a resolution of 800x480, and the graphic display is more delicate and clear 2. Large Memory: The E reader devices have 4GB/8GB/16GB storage for you to choose, and support maximum 16GB memory card expansion 3. Navigation Buttons: The black E reader has a mechanical navigation button, which supports the previous page and the following page 4. File Format: The color screen E reader supports for EPUB, PDF, TXT, FB2, PDB and other file formats to enjoy reading 5. Protective Cover: The 7in screen E reader is equipped with a protective cover for the reader, which the device in all directions and operates freely Specification: Item Type: E Reader Material: ABS Colour: Black Operating System: uCOS Architecture: Arm 9 + for DSP Speed: 380 MHz Storage: 4GB/8GB/16GB (supports up to 16GB memory card expansion, the list does not include memory