Bilsom® has upgraded its Radio and Electo® radio earmuffs to include both AM and FM capability. An external switch makes it easy for users to select the desired frequency band. The Electo model, available in both headband and cap-mounted versions, allows wearers to hear important communications such as warnings and alarms at a safely amplified level, while listening to the radio. Bilsom, Bacou-Dalloz, Smithfield, RI.