As above.
Do they exist? Lots of sporty type ones on ebay for next to nothing, but would like something helmet compatible, that doesn’t fall out my ear like earbuds do, and fairly Ok sound, as in Ok bass.

Any worth looking at within budget?

Ta

I’ve got a set of Sony Ericsson ones that are a clip with all the Bluetooth bits in it and you can plug in any phones you like. It comes with a short cabled ear bud type head phones, but the connector is standard.

Saying that, Sony Ericsson don’t exist any more. Might be hard to find.

I’ve got on of them ^^^^.

I never use it. £20 posted if you want it.