Amazon.com: BlueParrott M300-XT SE Mono Bluetooth Wireless Headset with Improved Call Quality for Mobile Phones - 80% Noise Cancellation with 2-Mic Tech - Ideal for High-Noise Environments Black (Renewed) : Everything Else
Sony Mono Bluetooth Headset MBH22 - Black - Walmart.com
Fosi Audio M01-BT Bluetooth Mono Amplifier For Home Speakers
4 OHMS 3W Mono Bluetooth Power Amplifier PCBA Battery Charging Function 3.7V Lithium Battery Bluetooth Module - AliExpress
Yealink BH71 Pro Teams Wireless Bluetooth Mono Headset (1208652)
Motorola In-ear Bluetooth Wireless Mono Headset Hk500+ - Black : Target
Andrea Communications WNC-2100 Wireless Noise-Canceling Bluetooth® Mono Headset