feature: 1. The new version of the accessory connects to the full range of FAST helmets, MICH helmets and dedicated headsets for peltor comtac walkie-talkies. 2. Through the test, Comtac I and Comtac II headsets can be connected to the full range of FAST helmets through the hook. 3. After using the buckle, the earmuffs of the Kangda walkie-talkie headset will be separated from the curved headband and directly clamped on the buckle. The buckle can be fixed in the grooves on both sides of the helmet. After installation, the earmuffsare used for The comtac headset can be rotated freely. usage: 1. Remove the ear cups from the brackets on both sides 2. Take out the wire on the earphone from the protective case (the hoop must be broken) 3. Clip the earmuffs on the hook of the product (aligned position, clip on the left and right sides) 4. Mounted on the helmet 5. Wrap the headphone cable around the top of the helmet and fix it with tape Includes: 1 pair x headphone holder