The Monarch Headset If you require comfortable industrial headsets, look no further than the Monarch. These lightweight headsets were originally designed for use with commercial speech recognition computers. They are manufactured with PBT, the same material used to make automobile bumpers and are built for rough industrial environments. Monarch headsets feature a slender backband that offers a unisex fit. They are equally at home on the floor of a TV studio or inside the cab of a tower crane.