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) - C9061AX5

• Kenwood 2 pin standard diameter ear 2.5mm and 3.5mm stereo. space of two-pin 8mm only suitable for Retevis RT22 RT21 RT27 RT7 H-777 H777S RT18 RT19 RT22S(not fit for other brand) walkie talkies Universal compatibility with most 3.5mm female phone audio headsets. it solves the problems of using the public walkie talkies inconvenience when you don't have a walkie-talkie headset With the advanced PU cable material. the connector is more stable and flexible to ensure an ultra-long lifespan You can transmit crystal through phone button. supports two channel receiver of two ear plugs Supports variety of brand mobile phone headset to achieve compatibility. so you can use your own headphones to talk on the walkie-talkie