OneDer S2 Head-mounted Wireless Bluetooth Version 5.0 Headset Headphones, with Mic, Handsfree, TF Card, USB Drive, AUX, FM Function (Green)

1. Bluetooth headset, mic inside, hands-free function
2. Support TF card, USB drive, AUX, FM
3. Rechargeable li-ion battery; charging port: Micro USB
4. Play time:3-5H
5. Bluetooth distance: 10m
6. Bluetooth version:5.0+EDR
7. Speaker: 3W, resistance: 8 ohms
8. F.R.: 20Hz-20KHz
9. Distortion: 90DB
10. Battery: 900mAh
11. Product size; 18*16.8*8.6cm(fold), 21*19.7*8.6cm(unfold)