V3.0 wireless bluetooth earphone air tube headsets radiation protection headphones

Bluetooth version: 3.0+EDR

Bluetooth protocol: AVRCP.A2DP.HFP.HSP

Transmission Power: Class 2

Transmission range: 10M

RF: 2.4GHz

Charging time: 2 hours

Talking time： 2-3 hours

Standby time: 200 hours

https://www.alibaba.com/product-detail/FS03-B-Saftey-Air-Tube-Anti_60621241161.html?spm=a2747.manage.0.0.40ab71d2UDeTE4