Features: / Eye-protection display: Equipped with a 7-inch color screen, it provides a high-resolution, glare-free reading experience, which is perfect for long reading without eye fatigue. / Adjustable brightness: Enjoy reading in any lighting conditions (including in complete darkness), and the adjustable design allows you to customize the brightness and color temperature for a comfortable reading experience. / Multiple format support: This e-reader supports 25 popular formats, including EPUB, PDF, and JPEG, eliminating the hassle of file conversion and providing easy access to a variety of books and documents. / Large storage capacity: With 4GB built-in memory and expandable up to 128GB via memory card (without memory card), you can carry thousands of books and provide up to one month of battery life on a single charge. / Seamless connection: You can skip pages and add bookmark functions. No need to reread. Read directly to your recently added bookmarked page. Built-in 2100mAh rechargeable battery, it can be used for weeks at a time. Specification: Name: E-Book Reader Material: ABS/LCD Display: 7-inch color screen Random Access Memory:512M deploy:4GB/8GB/16GB Size:175 / 126 / 11mm Color: black Packing included: 1 / E-Book Reader Note: 1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. 2. Due to the light and screen difference, the item/x27;s color may be slightly different from the pictures. Please understand.