Classification Information
Command and response units composed of a transmitter/receiver unit, a transmit button operably connected to the transmitter/receiver unit and a vibration device operably connected to the transmitter/receiver unit, which are used to provide a non-sound means for communication in an environment in which a user has an inability to hear due to noise or hearing impairment, the units being mountable to headwear, namely, helmets, hardhats, caps, headbands, hats and visors, and clothing
Electrical and Scientific Apparatus