H42 Behind the Head (BTH) Headset for 2-Way Radios is designed for use in applications from auto racing to heavy equipment operation. Selected via an optional cable, this resilient headset provides clear and reliable two-way communication through radios and intercom systems. This headset features a DNC microphone and Clear Hear speakers. It has an over-the-head Velcro strap, a red M1 mic with a wire boom, and a waterproof push-to-talk cover. Other features include high bend test cabling, volume control, universal radio port, and compatibility with many cords. It is compatible with all racing headset cables and numerous offroad sandcar intercom systems.