BTECH 2 Pin (K1 Connector) to 3.5MM Adapter with Push-to-Talk Button (Compatible with 2 Pin BaoFeng, Kenwood, BTECH Radios to 3.5mm Headsets with in-line Mics) BTECH 2 Pin (BaoFeng) to 3.5mm Adapter (Only Sold by BaoFengTech - insure BaoFengTech is your selected distributor to guarantee accuracy in receiving what is described) Converts the accessory jack on your Baofeng (or similar) radio to adapt to the standard 3.5mm headsets or audio out jack. If your headset includes a inline mic - you will be able to use the inline mic for communication. Simply press the PTT button on the radio, or on the supplied PTT on the cable. The adapter splits into two lines, one line is for your headset to plug into - the second coil includes the PTT button - you can use the supply velcro or snap line to secure the PTT to a convenient location. Helpful BaoFeng Guides and Programming Tips at Miklor.com