Logitech H650e Headset Mono Black 981-000513 - Best Buy
Logitech H570e Wired Headset, Mono Headphones with Noise-Cancelling Microphone, USB, in-Line Controls with Mute Button, Indicator LED, PC/Mac/Laptop - Black - Walmart.com
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
Targus Wireless Bluetooth Mono Headset - Mono - Mini-phone (3.5mm) USB Type A - Wired/Wireless - Bluetooth - On-ear - Monaural - Ear-cup - Omni-directional Noise Cancelling Microphone
Logitech H820e Wireless Headset Mono Black 981-000511 - Best Buy
Amazon.com: Jabra Talk 65 Mono - Premium Wireless Single Ear Headset - 2 Built-in Noise Cancelling Microphones, Media Streaming, Up to 100 Meters Bluetooth Range - Black : Electronics
Insignia™ On-Ear Analog Mono Headset Black NS-PAH5101 - Best Buy
CEECOACH mono basic headset basis + earhook
USB & 3.5mm Mono Headset - Yealink
Amazon.com: Headset Mono 2.5mm Hands-Free Earphone Single Earbud Headphone Microphone Black for Verizon LG VX5300 - Verizon LG VX5500 - Verizon LG VX8350 - Verizon LG VX8360 : Electronics