1. Multi-function: This MP3 player supports music playback, e-book reading, FM radio preset stations, and voice recording, meeting various needs in one device. 2. HD professional recording function: 1536KBPS bit rate with noise-reduction recording chip, high-definition long-distance recording, and stable performance, ideal for classroom or meeting recordings. 3. HiFi playback: Headphone output made with pure copper material for enhanced signal transmission. Switch between headphones, speakers, and Bluetooth. Features two-way Bluetooth 5.0 technology for high-definition audio transmission, providing a superior audio experience. Compatible with a wide range of Bluetooth devices. 4. E-books: Supports font size adjustment, 4 background color options, bookmarking, and folder categorization for personalized e-book reading. 5. Portable and Lightweight: Compact and lightweight design makes it easy to carry. Fits comfortably in your pocket and takes up minimal space in your bag. Ideal for use during meetings, classes, walking, or running. Supports microphone recording for on-the-go use. Audio Support: MP3, WAV External Memory: Yes Balanced Out: No Screen: Yes Style: MP3 Model Number: MP3 Player Function: E-Book Reading, FM Radio, Voice Recorder Supports Recording Function: Yes Supports FM: Yes Operation Mode: Touch Supports EBook Reading: Yes Bluetooth version: 5.0, two-way transmission (radio and video not supported) Screen: 1.8 inches Resolution: 128*160 Audio Formats: Fast/Normal compression (800Kbps-1000Kbps, sampling rate 8KHz-48KHz), FLAC (1000Kbps-1200Kbps, sampling rate 8KHz-48KHz), MP3 (8Kbps-320Kbps, sampling rate 8KHz-48KHz), WMA (5Kbps-384Kbps, sampling rate 8KHz-48KHz), WAV (32Kbps-1536Kbps, sampling rate 8KHz-48KHz), AAC-LC (8Kbps-320Kbps, sampling rate 8KHz-48KHz) Recording: MIC input, WAV format Video: MP4 Image: Support for JPG, JPEG, BMP E-book: Supported Clock, date, external storage: Supported Memory expansion: Up to 128GB Battery capacity: 250mAh, approximately 6-8 hours of continuous playback Signal-to-noise ratio: 95dB Size: 90.5 x 39.5 x 10mm / 3.56 x 1.56 x 0.39 in Weight: Approximately 31g Color: Black Material: Plastic + Metal Package Contents: 1 x MP3 Player 1 x Charging Cable 1 x 32GB Memory Card Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3cm.