Good Luck with that Sena 20s.

Nothing but a constant stream of problems with mine since I bought the SET, 1.5 years ago.
Literally, I have never been ablle to use them in a pr., because one of them is always broken or malfunctioning.
Replaced both units once, and still having issues with connectivity and new software updates.
Garbage.
With that said, I finally gave-up on the in-helmet speakers, and bought a decent set of earbuds last fall.
Westone w30's.
Yes, they are expensive. But I like high-end audio equipment, and decided to splurge.
Wires ARE replaceable (as noted, wires are THE most common failure point of all earbuds)
I have not yet FULLY tested these on a ride, but I expect good things.
The hardest part for me, is to get them to stay IN my ears when i put my helmet on my head!

gr