Haylou T19 TWS - top wireless headphones, Bluetooth 5.0, AAC and aptX, 4 microphones, advanced noise reduction during a call, up to 5 hours on charge, another 25 hours from the charging case. USB-C and wireless Qi charging. Auto play / pause - smart wearing detection, touch control next/back/voice assistant/answer call. Configuration via mobile app. Biological wool membranes.