Details:<p><strong>When Your Business is All about Voice, It's All about SupraPlus Wideband</strong></p> <p>Your customer conversations are mission critical, so your headset choice is just as vital. With the SupraPlus Wideband you get premium audio clarity, ultra noise cancelling and all day comfort for office and contact center professionals in a monaural design.</p>Specifications:<p></p> <p>SupraPlus headsets require a Plantronics audio processor, USB audio processor or direct connect cable to connect to phone, PC or computer.</p> <p><strong>VISTA® M22™ AUDIO PROCESSOR</strong><br/>The Vista M22 audio processor delivers precise levels of listening comfort, sophisticated hearing protection and superior audio performance. The Vista M22 includes Clearline™ audio to improve call quality in any environment, especially wideband VoIP.</p> <p><strong>DA45™ USB AUDIO PROCESSOR</strong><br/>Compatible with all Plantronics H-series headsets, this headset-to-USB adapter/audio processor brings superior call clarity to PC-based communications. The DA45 USB provides advanced audio technologies, plug-and-play connectivity and Quick Disconnect.</p> <ul> <li><strong>Operating Frequency:</strong> Wideband</li> <li><strong>Headset Microphone:</strong> Noise-cancelling or Voice Tube</li> <li><strong>Headset Weight:</strong></li> <ul> <li><strong>HW251N Monaural:</strong> Noise-cancelling 67g</li> <li><strong>HW251 Monaural:</strong> Voice Tube 69g</li> <li><strong>HW261N Binaural:</strong> Noise-cancelling 86g</li> <li><strong>HW261 Binaural:</strong> Voice Tube 88g</li> </ul> <li><strong>Compatibility:</strong> Plantronics Audio Processor and cables</li> <li><strong>Wearing Styles:</strong> Over-theHead, Binaural and Monaural Options</li> <li><strong>Limited Warranty:</strong> 2 years</li> </ul>