One Der S2 Headphones

1.Bluetooth Speaker, MIC inside, handsfree function
2.Support TF Card/USB drive/AUX/FM
3.Rechargeable Li-ion battery; charging port: Micro USB
4.play time:3-5H
Parameter:
Bluetooth Distance：10M
Bluetooth version:5.0+EDR
Speaker :     3W Resistance：8Ω
F.R.：20Hz-20Khz
Distortion：90DB
Battery：900MAH