BPlantronics - S11 System Over-the-Head Telephone Headset w/Noise Canceling Microphone - Sold As 1 Each/BBRBRConnects to single- or multi-line phones with ease. Offers hands free convenience and comfort. Noise-canceling microphone reduces background noise to ensure clear conversations. Universal amplifier is compatible with most phones and provides mute and volume control. Headset Type Monaural; Headset Style Over The Head; Earpiece Type Ear Cushions; Earpiece Material Foam.BRLIConnects to single-...

BPlantronics - S11 System Over-the-Head Telephone Headset w/Noise Canceling Microphone - Sold As 1 Each/BBRBRConnects to single- or multi-line phones with ease. Offers hands free convenience and comfort. Noise-canceling microphone reduces background noise to ensure clear conversations. Universal amplifier is compatible with most phones and provides mute and volume control. Headset Type Monaural; Headset Style Over The Head; Earpiece Type Ear Cushions; Earpiece Material Foam.BRLIConnects to single-...