Product Features: 1. Built-in eye protection LED color screen. 2. Professional recording chip, high-definition recording. 3. Real-time monitoring recording, AB segment repeat function. 4. Timestamp, automatically named with the recording file date. Detect low power and automatically save recording files Support up to 64GB Micro-SD card (SD card not included) Built-in high-fidelity speakers, enjoy music without headphones. Multi-function recorder, MP3, FM tuner, e-book, HiFi sound quality, built-in speakers. Parameters: 1. Recording format: WAV/MP3 2. Music format: MP3/WMA/WAV 3. Charging time: about 1 hour 4. Playing time: about 4 hours (3.5MM headphones can listen to music with the screen off) 5. Battery capacity: 200mAh lithium battery 6. Screen size: 1.1 inches 7. Headphone jack: 3.5mm 8. Memory expansion: 4GB-64GB Micro-SD card (SD card not included) 9. Compatible system: / 10. Product size: 84 x 30 x 13mm (length x width x thickness) 11. Product material: ABS 12. Product color: Black Note: SD card is not included and needs to be purchased separately! Package Contents: 1 x MP4 player Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.