Plantronics H91CIS Headset for CISCO 7940, 7960, 7970 IP Phones

Plantronics H91-CIS Encore for CISCO features a unique Sound Enhancement System™ (SES)
Encore headset users have the option, at the flick of a switch on the headset, to listen to the caller's normal telephone voice or to adjust the sound for a fuller, richer tone. Encore headsets provide a perfect acoustical fit, adjustable headband, and soft ear cushions for optimum comfort, stability, and fit.

H91 CIS Encore Monaural headsets, with sound in one ear, are lightweight and are ideal for users who may need to confer with colleagues when making or taking a call.

Comfortable and Convenient. We conducted the largest human-factors study of the ear ever undertaken to design this super-stable, super-light headset. With multiple adjustments possible, the Encore® headset will fit just about anyone comfortably.

Compatibility. For the Cisco IP phones that use a power cube 7940, 7960, 7970