The Rail-Mounted Intercom Headset attaches quickly and securely to the accessory rail on the MRC Opposition Helmet, delivering true headset-quality audio without sacrificing helmet protection. Designed for performance and comfort, this system provides full ear-seal coverage similar to a traditional headset - giving you superior hearing protection, a better seal against the head, and improved long-wear comfort. Excellent noise reduction and the integrated noise-cancelling microphone ensures clear communication in high-noise environments. Ideal for hot conditions where a helmet is required but headset performance for clear, reliable communication is critical. This purpose-built solution allows you to wear a helmet and headset simultaneously offering the perfect solution in many environments. The 5-pin coil cord connects to the included adapters for connection to Mono or STX intercoms. You can also use an optional radio jumper to connect to a handheld radio. Features: Rail Mounted for Quick-connect to MRC Opposition helmet Full ear-seal coverage for enhanced comfort and protection Directional ear cups for improved fit and comfort Noise cancelling high-performance microphone Excellent hearing protection Configurable right or left dress (mic on the left or right) Compatible with Mono and STX intercoms Includes: HRM-210 Headset 5-Pin coil cord Mono and STX adapters