| Color(s) | Black |
| Earpiece - Earpiece Design | Over-the-head |
| Earpiece - Earpiece Type | Monaural |
| Earpiece Material | Leatherette |
| Earpiece Type | Ear Cushion |
| For Use With | Office Phones, PC phones |
| Form Factor | Semi-open |
| Global Product Type | Headsets-Monaural |
| Headset Style | Over The Head |
| Headset Type | Monaural |
| Interfaces/Ports - Host Interface | Proprietary Interface |
| Microphone | Noise Canceling |
| Microphone - Microphone Design | Boom |
| Microphone - Microphone Technology | Noise Cancelling |
| Model Name/Number | EncorePro |
| Product Line | EncorePro |
| Product Model | HW291N |
| Product Name | EncorePro HW291N Mono Headset |
| Product Type | Headset |
| Required for Operation | Requires Plantronics® Vista® M22 Audio Processor (phone) or DA45™ USB Audio Processor (PC) (sold separately). |
| Technical Information - Cable Length | 10 ft |
| Technical Information - Connectivity Technology | Wired |
| Technical Information - Sound Mode | Mono |
| Technical Information - Wireless Technology | Not Applicable |