Sennheiser 231 Mono Bluetooth Headset- The ultra-secure bluetooth wireless headset is the perfect choice for financial, medical, government and contact centers or anywhere sensitive conversations happen
Poly Voyager 4310 UC Wireless Bluetooth Mono Headset (USB-C) Teams Version
Jabra EVOLVE2 65 UC USB-A Bluetooth Mono Headset w/Stand 26599-889-989
Amazon.com: BlueParrott M300-XT Noise Cancelling Hands-free Mono Bluetooth Headset for Mobile Phones with up to 14 Hours of Talk Time for On-The-Go Mobile Professionals & Drivers : Cell Phones & Accessories