The Sennheiser USB CC 1x5 CTRL Controller Spare Cable is specifically designed for use with Sennheiser SC 135 USB and Sennheiser SC 165 USB headsets. It features in-line call control - Answer/end/redial call, volume up/ down, microphone mute and 3.5mm Socket to USB-A.
USB spare controller cable
Compatible with Sennheiser SC 135 USB and Sennheiser SC 165 USB headsets
In-line call control
Answer/end/redial call, volume up/ down, microphone mute
3.5mm Socket to USB-A