Features: 1. The new version 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 helmet by hanging buckle. 3.After using the buckle, earmuffs for comtac walkie-talkie headphones will be separated from the curved headband, directly clip to the buckle, and the buckle can be fixed in the groove on the both sides of the helmet ,after installation, earmuffs for comtac headphones are free to rotate. Usage: 1.Take off the earmuffs from bracket on the both sides 2.Take out the wire on the earphone from cover (must break hoop package) 3.Clip the earmuffs on the hanging buckle of the product (align the location, and clip it at both left and right ) 4.Install it on the helmet 5.swirl the wiring of the earphone on the top of the helmet, and fix it with adhesive tapeincludes:1 Pair x Headset Holder Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 447 hours Hope you have a pleasant shopping experience!