Sports Bluetooth Earphone ( Tf card hole )  
Brand Name : Yesido 
Bluetooth version : 5.0 
Style : in-Ear 
Color : Black&White 
Chip modle : BK3266
Battery : 110mAh
Full Charging time : 1.8H
Standby time :about 36H
Talk time : Up to 7.5H
Freqiency Table : 2402.0-2480.0MHz