Product Sheet
Page 1
... Available with Voice Tube or noise-canceling microphone: Voice Tube-Plantronics' trademark design; DA45™ USB Audio Processor Compatible with all but the noisiest environments. Operating Frequency: Standard Band Headset Microphone: Noise-canceling or Voice Tube Models/ Weight: H91 Monaural, Voice Tube: 50 g H91N Monaural, Noise-canceling... blocks out background noise. (Also available with Voice Tube) Flexible Boom for optimal microphone placement Encore headsets require a Plantronics audio processor, USB audio processor, or direct connect cable to connect to phone or PC. All other...
... Available with Voice Tube or noise-canceling microphone: Voice Tube-Plantronics' trademark design; DA45™ USB Audio Processor Compatible with all but the noisiest environments. Operating Frequency: Standard Band Headset Microphone: Noise-canceling or Voice Tube Models/ Weight: H91 Monaural, Voice Tube: 50 g H91N Monaural, Noise-canceling... blocks out background noise. (Also available with Voice Tube) Flexible Boom for optimal microphone placement Encore headsets require a Plantronics audio processor, USB audio processor, or direct connect cable to connect to phone or PC. All other...