2 standard speaker foams (SK-BTHS1-SF) included
Can be used instead of the original headband (HSX100-OTH-HB-01 o HSX100-BTN-L-HB-01) on Zebra HS2100/HS3100 headsets, to turn them into stereo headsets. In this case, the MUTE function of the microphone is no longer activated when the microphone is placed vertically, but exclusively using the button on the headset.