Retevis 2 Pin Walkie Talkie Shoulder Speaker Mic Microphone Compatible Baofeng UV-5R BF-888S Retevis H-777 RT22 RT21 RT27 H-777S RT-5R Kenwood HYT 2 Way Radio (1 Pack) Handheld speaker mic with PTT is pretty handy and easy to operate it for handsfree conversations with your teammates 3.5mm Earphone Audio Jack listen only earpiece for the ultimate accessory solution; pretty necessary when you dont like to other people listen to your partners private communication in noise environment 360 degree swivel lapel clip on the back of the microphone allows you clip the mic on shoulder or collar close to moth to transmit clear sound 2 pin standard diameter ear 3.5mm stereo of top pin; Mic 2.5mm stereo of bottom pin;Space of two-pin11mm Simple and convenient return process; 60 days warranty provide by us and 30 days no reason to return