US Patent 10129669 Personal hearing device

A universal personal hearing device is provided. The universal personal hearing device includes a first microphone, an amplification circuit electrically connected to the first microphone, a speaker electrically connected to the amplification circuit for amplifying ambient sound detected by the first microphone, and a housing having at least one arcuate outer edge. The arcuate outer edge is slidably engageable with the concha wall to provide a universal fit across a variety of ears having different sizes and/or shapes.