1. Built-in 300mAh lithium polymer battery, standby time of up to 14 days and battery life of 15 hours. 2. Wireless Bluetooth 5.0 technology, faster transmission speed and more stable performance. 3. Stereo surround sound, clear sound transmission. 4. Using high magnetic flux moving coil unit, the sound field is wider, the bass is stronger, and the sound quality is clearer. 5. The 8-section adjustable head beam can adapt to the size of the head, adjust freely, and fit comfortably. 6. PU earmuffs, light and breathable, comfortable to wear. 7. Bluetooth solution: Jerry 5.0 8. Battery capacity: 300mah 9. Speaker: 30mm black magnet
