DD Audio DXB-05 wireless headphones 196.70 EUR 110.80 EUR Available BUY Article Number: DXBT-05 Share Information Reviews Specs: Driver Size - mm40 Active Cancelation Up to 15~20dB between 50~500Hz Bluetooth VersionV4.0 Operation Distance10m Power3.7V 360mAh Working HourUp to 12 hrs Frequency Response - Hz20Hz-20KHz Plug3.5mm TRRS.