Sennheiser IMPACT DW Pro 2 ML Binaural Wireless Headset - Handset Solutions
Sennheiser DW Pro 2 Dual Ear Wireless Office Headset with Microphone DECT 6.0 | #1826830441
504464 Sennheiser | Sennheiser DW Pro 2 ML wireless Headset | 137-1241 | RS Components
Sennheiser DW Pro 1 Single-Ear Wireless Office Headset with DECT 6.0. Includes Noise-Canceling Microphone. Works with PC and Mac : Electronics - Amazon.com
User manual Sennheiser DW Pro 2 (English - 44 pages)