Type : open air, dynamic driver unit : 40 mm diameter, some type power handling capacity : 50 mw impedance : 32 ohms at 1 khz sensitivity : 108 db/mw frequency response : 12-22 000 hz cord : 1.2 m with stereo mini plug mass : approx 125 g without cordIn addition to wireless bluetooth, it is headset - integrated microphone, has fm connection, micro usb inputStereo folding headset has high sound quality, compact design and elegance

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