1. Material: ABS plastic + hardware bracket + PU leather earmuffs
2. Bluetooth version: Jerry AC6955F V5.3
3. Bluetooth chip: JL7006F
4. Transmission range: 10m
5. Memory card playback format: MP3 WAV / WMA, maximum 32GB, format FAT FAT32
6. Play time: 20 hours (lights off) 12 hours (lights on)
7. Built-in lithium battery: DC 3.7 V DC 400mAh
8. Speaker impedance: 32Ohm
9. Charging time: about 2H
10. Speaker size: 40mm neodymium ferromagnetic speaker
11. Microphone sensitivity: -42+/-2dB
12. Ergonomic design, no pressure on the ears or stuffiness when worn for a long time
13. Using Bluetooth 5.3 chip, high-speed and stable transmission over a distance of 10m, no lag during use, low latency, and audio and video synchronization