Riversong EA219 Utopia L1 True Wireless Earbuds Black

HD sound
ANC Active Noice Cancellation
Bluetooth version :BT5.0
Transmission distance :Up to 10 meters
Frequency range: 2.4-2.48Ghz
Comfort Fit Wearing
Battery capacity ( headphone): 40mAh
Battery capacity(Charging box): 400mAh