Note: There are many types of this product for you to choose from, please choose the product you need This product is only compatible with Howard Leight Impact Sport electronic earmuffs External Microphone Kit: Safety earmuffs with this external microphone kit installed instantly convert to communication earmuffs for communication. Equipped with U94 kenwood 2-pin ptt, compatible with Baofeng walkie-talkie. Easy to install and can be put away when not in use without any impact on the earphones. Note: This external microphone kit should be used together with the equipped ptt, so that there will be no incompatibility; If disassembled for use, it may be incompatible due to inconsistent versions Gel earpads: Sightlines design - A relief cuts on the top of ear cups for eyewear protection arms ,so you can not even feel them on head and can wear your ear protetion all day now. Groove design: Reduce the pressure between the muffs and the ears, provide better softness and comfortable. No matter how long you use, your ears won't hurt Easy to replace - Made of good quality which has excellent elasticity,so just pop out the old ones and snap the new ones into place without worry broken. Note: This product does not include earphones and walkie-talkies