Features: 1. The updated accessories are compatible with specific headphones for FAST helmets, MICH helmets, and Peltor Comtac communication systems. 2. Tested compatibility allows Comtac I and Comtac II headphones to be attached to various FAST helmet models using a mounting buckle. 3. After installation, the earmuffs from Comtac communication headsets detach from the headband and securely clip onto the mounting buckle. The buckle fits into grooves on both sides of the helmet, allowing the earmuffs to rotate freely after attachment. Usage: 1. Remove the earmuffs from the bracket on both sides. 2. Pull the headphone wire out from the cover (break the loop seal as required). 3. Attach the earmuffs to the hanging buckle provided (align properly and secure on left and right sides). 4. Mount the assembly onto the helmet. 5. Route the headphone wiring over the top of the helmet and secure it with included tape. Includes: 1 Pair x Headset Holder