Features: 1. The new version of the accessories can be connected to special headphones for a full range of FAST helmets, MICH helmets and Peltor Comtac walkie-talkie. 2. Through testing, headphones for Comtac I, Comtac II can be connected to the full range of FAST helmets by hanging the buckle. 3. After using the buckle, the hearing protection for Comtac walkie-talkie headphones will be separated from the curved headband, attached directly to the buckle, and the buckle can be fixed in the groove on both sides of the helmet, after installation, the hearing protection for Comtac headphones is free to rotate. Usage: 1. Remove the earmuffs from the bracket on both sides 2. Take out the wire of the earphone from the cover (must break the arc packaging) 3. Attach the earmuffs to the hanging buckle of the product (adjust the position and attach it to both left and right) 4. Install it on the helmet 5. Twist the earphone wires on the top of the helmet and fix it with tape Includes: 1 pair x headset holder