Assertion: telephone headset | /r/HasProperty | monaural
Facets:
value: for double-earpiece designs
type: CAUSE
Source sentences:
text: Telephone headsets are monaural, even for double-earpiece designs, because telephone offers only single-channel input and output.
text: Telephone headsets are monaural, even for double-earpiece designs, because telephone offers only single-channel input and output.