【E-Ink Display】2.7-inch eye-friendly e-ink screen reduces eye strain with no blue light emission, providing a paper-like reading experience. 【Versatile Functionality】Combines MP3 player, e-book reader, and MP4 capabilities in one compact device, perfect for students and book lovers. 【Enhanced Reading Experience】Features a front-light design for comfortable reading in various lighting conditions, with anti-glare properties for outdoor use. 【High-Quality Audio】Equipped with a high-sensitivity microphone and high-definition speaker, delivering lossless audio quality for music enthusiasts. 【Extensive Battery Life】500mAh 3.7V lithium battery provides up to 55 hours of standby time, ensuring long-lasting usage between charges. Specifications: Screen: 2.7-inch e-ink display with built-in reading light Audio: High-sensitivity microphone, high-definition speaker with external speaker switch Bluetooth-Compatible: Version 5.4 with dual-device transfer support Dictionary: 7 built-in dictionaries Battery: 500mAh 3.7V lithium battery, 55 hours standby time Storage: 32GB internal, expandable up to 128GB Audio Formats: MP3, FLAC, AAC, WAV Recording Formats: MP3, WMA Reading Format: TXT