E-Reader Function Memory and Interface Large memory: the e-reader devices have 4GB/8GB/16GB storage space to choose from, and support maximum 16GB memory card expansion.Interface type: 1 x Micro-USB, 1 x 3.5mm, 1 x memory card slot (the list does not include memory card). Perfect Light for Day and Night Aided reading, adjustable font size brightness and color.Relieve the strength of reading fatigue, long comfortable reading. Multifunction and Built-in Multimedia Built-in music, video, picture, it can relax you after reading.Can jump pages by itself, add bookmark function No need to re-read, you can directly read the last bookmark page added.Other functions: Clock, bookmark, slideshow (auto flip), music slideshow, zoom in/out, rotate screen, turn page. Color TFT LCD HD Screen The e-reader has a 7-inch color HD screen with 800x480 resolution, and the graphic display is finer and clearer. Comfortable to Hold With the streamlined body design, you can hold it in one hand more easily. Built-in 2100mAh Battery Long battery life, one charge can be used for several days. Simple and Independent Flip Book Button Enjoy reading Navigation buttons: the black e-reader has a mechanical navigation button that supports previous and next page.File format: the color screen of the e-reader supports EPUB, PDF, TXT, FB2, PDB and other file formats to enjoy reading.Protective cover: the 7-inch screen e-reader is equipped with a protective cover for the reader, which protects the device in all directions and works freely. Note Comes with built-in rechargeable battery Package List 1 x E-Reader 1 x Protective cover l 1 x Protective film 1 x headphone 1 x data cable 1 x user manua E-Reader Specification Material ABS Color Black Operating System uCOS Architecture Arm 9 + for DSP Speed 380 MHz Screen 7 inch TFT LCD 16:9 Resolution 800x480 DRM support for Adobe DRM File Formats EPUB, PDF, TXT, FB2, PDB Voice Frequency Formats MP3, WMA, AAC, WAV, OGG Image Formats JPG, BMP, GIF, PNG Video Formats MPEG1, MPEG2, MPEG4XVID, H.264, H.263, RM/RMVB, MKV, MOV, VOB, FLV Battery Type Built-in 2100mAh battery