Plantronics H91 Encore Voice Tube - Over-the-head

The H91 Encore Monaural Headset was designed for use in a busy office. This single-headphone design allows you to communicate freely with office workers and clients while you work : Requires a Plantronics amplifier to plug into your phone : Uses the SES Sound System to adjust the sound of your voice : With its hands-free operation you're free to multitask--stay on your conference call while typing up a report : Features a noise-canceling microphone for high voice quality : The sleek over-ear style with cushioned receiver is comfortable to use for extended periods : Microphone adjust switch for optimal volume : RF Noise Shield reduce radio interference : Clothing clip for extra stability : Quick Disconnect feature gives you greater freedom to get up from your desk without having to take off the headset or put the caller on hold : 10 ft. cable for extended reach : Perfect for salespeople, stockbrokers, and anyone who spends a lot of time on the phone