Developing and Earplug

Acentech’s RH Lyon Division developed an in-ear earphone for underwater communications for scuba divers as part of a Small Business Innovation Research (SBIR) Phase II project to develop novel applications for advanced transducer material. The company created a prototype device with an open design that provided clear communications for scuba divers, yet allowed water to flow past the earphone for easy pressure equalization.  

Photo and description courtesy of Acentech.