Dual Earbuds Dialing,High Definition Stereo Sound， Comfortable In-Ear Design，Built-in Control Buttons

Version: V5.0
transmission frequency:2.4GHz
Earbud Battery: 40Mah
Charging box: 400mah ,
4times Recharging
Talk time: 2.5hrs
Standby time:150hrs
Charging time: 2hrs
Data interface: USB2.0
Speaker ：φ9mm /6u
Sensitive:105±3db
Input interface：USB stereo