Talk:headset

I think that this is wrong.

A headset is not necessarily a pair of headphones or earpieces. It can be a single earpiece. But there must always be something else.

A headset is more than a pair of headphones or earpieces alone.

The term is used to describe a head or ear mounted audio output device together with either a microphone or video-spectacles.

The oxford dictionary mentions a microphone only and not a video display.

I make no comment on the bike stuff, that looks correct.