Headphone sets industrial standards for functionality. Great for all day wear in nominal noise situations, it's only five ounces total, with mild side pressure. Electret, flexible, noise canceling Boom Microphone is standard. Adjustable headband for comfort. Noise cancelling boom Mic is standard.
Adjustable headband fits all.
If you're very active and need to hear everything around you, try the BH-51 Headphone. The passive side is open and unrestricted while the active side is a noise eliminating cup that assures outside noise won't cut into your communication. Electret, noise canceling Boom Microphone is standard. Comes with an ear hook and noise reducing ear plugs. This lightweight Headphone, with noise cancelling, electret microphone, slips easily under a hard hat or Bump Cap.