Amazon.com: Wantek Corded USB Headsets Mono with Noise Cancelling Mic and in-line Controls, UC Business Headset for Skype, SoftPhone, Call Center, Crystal Clear Chat, Super Lightweight, Ultra Comfort (UC600) : Electronics
Amazon.com: Global Teck Worldwide Poly Voyager 4310 UC Wireless Bluetooth Mono Headset (USB-A) with Charge Stand - GTW Bundle for Deskphone, PC/Mac, Works with Zoom, RingCentral, 8x8, Vonage, Microfiber Included : Electronics
Amazon.com: Avantree HF039 Long Coiled Cord Headphones for TV and PC with Volume Control, Stero/Mono Control,16.4 Feet / 5M Extended Range Cable, 3.5mm AUX Audio, Stereo Sound Spiral Wired Over Ear Headphones :
AxcessAbles 1/8 inch (3.5mm) TS to 1/8 inch (3.5mm) TS Unbalanced Mono Patch Cables for Music Producers, Eurorack Synthesizer, Multi-Color 6 Pack (1.5ft)
Amazon.com: Tombow Mono Eraser, Black, Small : Office Products
Amazon.com : PARACORD PLANET Fishing Line High Performance Mono Filament 300 Yards Length Zero to None Stretch 4,6,8,12,15,20,25,30,40,50,60 (LB) Pound Test (Clear Color) : Sports & Outdoors
Amazon.com: Jabra Engage 75 Wireless Headset, Mono – Telephone Headset with Industry-Leading Wireless Performance, Advanced Noise-Cancelling Microphone, Call Center Headset with All Day Battery Life : Electronics
Amazon.com: Califone 3068AV Stereo/Mono Headphones, 3.5 mm Stereo Plug, Black : Electronics