Sennheiser UI 740 Active box headset switch or handset switch (09885)

Sennheiser UI 740 Active box, headset switch or handset switch (09885)

Sennheiser UI 740 Active Box works as a connector between your handset, headset and PC. With a touch of a button, easily switch back and forth between the handset to headset or handset to PC. In addition, comes with microphone mute, volume control and cable connection.