Assertion: device | /r/HasProperty | pressed against the skin
Facets:
value: under the mandible
type: LOCATION
Source sentences:
text: The most common device is a handheld, battery-operated device pressed against the skin under the mandible which produces vibrations to allow speech; other variations include a device similar to the "talk box" electronic music device, which delivers the basis of the speech sound via a tube placed in the mouth.