Pairing patented SENS® technology with noise-cancelling boom mic, Model SM1R allows users in high-noise environments to communicate via face-to-face or 2-way radios while maintaining 360° audible awareness of their surroundings and protecting their hearing. Headset is powered by radio, eliminating need for battery, making it lighter and more comfortable to wear. Compatible with multiple 2-way radios, headset is available in headband, behind-the-neck, and helmet versions.