The smaller
2.5 mm size is
used more often to connect headsets to things like landline phones, lightweight two-way radios and video cameras. Those need to put a microphone into the headset, as well as
audio, which is why there's sometimes an extra stripe.
Nov 28, 2018');})();(function(){window.jsl.dh('6','
');})();(function(){window.jsl.dh('_7h6gYMGyHJf_-gSYqZaoBg39','
');})();(function(){window.jsl.dh('8','
A small round connector for accepting the pin-shaped plug from certain phone headsets. While 2.5mm was the original standard for phone headsets, the slightly larger 3.5mm size is standard for music headphones and is now the more common size on phones. ...
