Bluetooth version…upgraded from 5.0 to 5.2
Communication : true wireless
Control button ???? : smart touch
Microphone ???? : yes ????
Working distance :10 meters
Play time : 6 hours
Waterproof grade :waterproof, sweatproof
Functions : for call ????, music, video, bluetooth earphone, sports
Frequency response range : from 20-2000 Hz
Charging method : LED digital display
Charging case capacity : 2200 mAh
Headphones ???? battery ???? capacity 50 mAh
Package ???? usb charging cable, 3 replaceable ear ???? cap
