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Sennheiser UI 710
Mute phone calls Only requires a quick-disconnect cord for the phone Switch between handset and headset Easy switch Sennheiser UI 710 Connector Featuring a passive universal interface, the Sennheiser UI 710 adds a mute button to your headset, allowing you to mute phone calls in progress without having to work with the phone itself. It facilitates simultaneous connection as well as switching between the headset and handset, and all it requires a modular to quick-disconnect cord for the phone.