Amazon.com: Retevis Earpiece Adapter,2 Pin to 3.5mm Walkie Talkies Headset Adapter Only Compatible RT21 RT22 RT27 RT7 H-777 H777S RT18 RT19 RT22S (Not Fit for Other Brands) 2 Way Radios (1 Pack) :
2Pin K-head Walkie Talkie Audio Adapter Cable 23cm for Baofeng UV-XR UV-9R Plus | eBay
Amazon.com: Mcbazel Surecom 3.5mm Kenwood Earpiece Adaptor for Cellphone to Walkie-Talkie : Electronics
Amazon.com: TWAYRDIO Walkie Talkie Bluetooth Microphone Speaker with 2 Pin Mic Jack Bluetooth Adapter for Baofeng UV-5R BF-F8HP UV-82 UV-82HP Kenwood Handheld Radio : Electronics
Adapter for tactical headset, compatible with kenwood plug walkie-talkies | eBay
Amazon.com: Fumei Walkie Talkie Audio Cable Adapter Compatible with Baofeng BF-9700 UV-9R+ Plug to Kenwood HYT TYT Baofeng UV-5R 2Pin Headset Port : Electronics
Amazon.com: Retevis Earpiece Adapter for Walkie Talkie,2 Pin to 3.5mm Headset Adapter Only Compatible RT22 RT21 RT27 RT7 H-777 H777S RT18 RT19 RT22S(Not Fit for Other Brand) 2 Way Radio (5 Pack) :
Helicopter Headset Adapter | Walkie Talkie Jack Adapter - Walkie Talkie Parts & Accessories - Aliexpress
Artudatech Walkie Talkie Audio Adapter K Interface 2Pin Headset Port Converter Cable For Baofeng UV9R BF 9700 A58 - AliExpress
Amazon.com: Retevis Earpiece Adapter,2 Pin to 3.5mm Walkie Talkies Headset Adapter Only Compatible RT21 RT22 RT27 RT7 H-777 H777S RT18 RT19 RT22S (Not Fit for Other Brands) 2 Way Radios (1 Pack) :
Amazon.com: Retevis Earpiece Adapter for Walkie Talkie,2 Pin to 3.5mm Headset Adapter Only Compatible RT22 RT21 RT27 RT7 H-777 H777S RT18 RT19 RT22S(Not Fit for Other Brand) 2 Way Radio (5 Pack) :
Walkie Talkie Bluetooth Adapter (Motorola M1 Pin) - Herda Radio
Walkie Talkie Audio Cable Adapter For Baofeng Uv-9r Plus Speaker Microphone - Walmart.com