3.5mm Transparent Catheter Air Duct Headset Adapter for Radio Walkie Talkie GP328 GP338 PTX760 GP340 to Mobile Phone with PTT - Walmart.com
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PTT Walkie‑Talkie Headset Headphones Adapter 2.5mm For Motorola T5428 6200C T80 | eBay
Element U94 PTT Adaptor Military Headset For ICOM Motorola Kenwood Yaesu Midland Mobile Phone - Two Way Radio
Decibullz Noise Cancelling Walkie Talkie Headset Adapter - Midland Radio