Amazon.com: Sennheiser MB Pro 1 (506041) - Single-Sided, Wireless Bluetooth Headset | For Mobile Phone Connection | w/ HD Sound & Noise Cancelling Microphone (Black)
Sennheiser MB 660 review: Sounds like a winner | ITPro
Sennheiser MB PRO 1 UC 506042
Sennheiser Wireless MB 660 headset (certified for Microsoft) | VideoCentric | Gold UK Partner | UK's Expert Video Conferencing Integrator