Radiation free wireless bluetooth earphone air tube headphones with V4.1+EDR

Main Parameters:

Bluetooth Version: 4.1+EDR

Bluetooth protocol: AVRCP.A2DP.HFP.HSP

Transmission power: Class 2

Transmission range: 10m

RF: 2.4GHz

Charging time: approx. 2 hours

Talking time: approx.3 hours

Standby time: 200 hours

https://www.alibaba.com/product-detail/China-factory-mono-air-tube-earbuds_60556323002.html?spm=a2747.manage.0.0.40ab71d2ONzud0