Military AMP Tactical Communication Headset Helmet-mounted Pickup Noise Reduction Headphones For Shooting Hunting Airsoft Item Name:- Tactical Headsets AMP HeadSetSpecifications:- AMP HeadSet is Head-mounted & Helmet-mounted Dual Purpose Headphon,The design of fast switching between them - AMP HeadSet Helmet-mounted currently support the FAST series of Helmet ARC Rail, such as Maritime, SF, Highcut, Sentry helmet incompatible with AF, T-Wendy, MTEK and other helmet. - Headphone connection port : NATO standard interface U-174/u plug - Batte