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 protects the device in all directions and operates freely Specification: Item Type: E Reader Material: ABS Colour: Black Operating System: uCOS Architecture: Arm 9 Speed: 380 MHz Storage: 4GB/8GB/16GB (supports up to 16GB memory card expansion, the list does not include memory card) Screen: 7in TFT LCD 16:9 Resolution: 800x480 Functions: Clock, Bookmarks, Slideshow (Auto Flip), Music Slideshow, Zoom In/Zoom Out, Rotate Screen, Turn Pages DRM: Support for DRM File Formats: EPUB, PDF, TXT, FB2, PDB Voice Frequency Format: MP3, WMA, AAC, WAV, OGG Image Format: JPG, BMP, GIF, PNG Video Formats: MPEG1, MPEG2, MPEG4XVID, H.264, H.263, RM/RMVB, MKV, MOV, VOB, FLV Interface Type: 1 x Micro USB, 1 x 3.5mm, 1 x Memory Card Slot (the list does not include memory card) Battery Type: Built in 2100mAh Battery. Package List: 1 x E Reader1 x Protective Case1 x Protective Film1 x Headphones1 x Data Line1 x User Manual Note: Shipped with Built in BatteryThe reader supports the connection for Win 10 and the following versions of computers, does not support for OS X system computers.