Sennheiser mb 660 uc binaural head band black silver headset headsets call centeroffice binaural head band black silver dynamic wiredwirele
Sennheiser mb 660 uc suitable for call centeroffice receiver frequency 8 24000 hz width 15 cm colour black money connectivity technology wiredwireless device interface bluetooth 3 5 mm 18 usb wireless router range 25 m cable length 3 m headphone type circumaural frequency 15 23000 hz microphone frequency 150 6800 hz
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