Retevis 2 Pin Shoulder Mic Speaker Mic Microphone Compatible Baofeng BF-888S UV-5R Kenwood Retevis H-777 RT21 RT22 RT5 RT-5R H-777S Arcshell AR-5 Walkie Talkie (5 Pack) Ear 3.5mm stereo of top pin and mic 2.5mm stereo of bottom pin Handheld speaker mic make it easy to speak and hear without lifting your radio Rotatable clip in the back allows you clip the mic everywhere you want Push-To-Talk button and microphone are located on the accessory for quick and easy use Simple and convenient return process; 60 days warranty provide by us and 30 days no reason to return