Amazon.com: EPOS | SENNHEISER Adapt 660 (1000200) - Dual-Sided, Dual-Connectivity, Wireless, Bluetooth, ANC Over-Ear Headset | for Desk/Cell Phone & Softphone | Teams Certified (Black), 207 mm x 65 mm x 181 mm : Electronics
Sennheiser Bluetooth Headphones with Microphone MB 660 UC with Active Noise Canceling - Global Teck
EPOS Sennheiser MB 660 UC - ANC Bluetooth Headset - Includes USB Dongle