Yes you can. Ultimate ears do them, £25. Tiny 40mm square thing, only about 5 -10mm thick. Built in battery seems to last all day. https://www.ultimateear.com/categories/accessories
Good. Hope it does what you want. I put it in my inside breast pocket. Run the wire up from there easily. Works fine and no wind noise like a BT unit on your helmet.
Arrived today and ready for a test soon Thanks @Sam1199 these look just the job can’t believe how small the unit is
@Sam1199 @Bumpkin so you wore your headphones to that unit and it then makes them Bluetooth? Which headphones are you using? Why not just wire them in to your sena?
If you mean the unit I bought, yes it makes it BT. I have a BT unit that had micro USB connection, so these plug-phones wont fit. So had to find another solution. If it had fitted, I’d have just plugged it in. I cant use the speakers with these units, gives me a headache when I wear a fitting helmet., Or I have to have a very loose helmet, which isnt good. Not tested the plugs yet on the bike to see how comfy, but sound and fit seem ok sat on my sofa!
I think you've misunderstood my post. I'm saying that placement of the speakers included with my Sena 10U isn't particularly optimal if you just clip them into the helmet in the default position. They're not, in my case at least, properly aligned with my ear canal and also not close enough to my ears. They worked OK when sat at home but on the bike, once you're moving, the ability to hear audio diminishes with speed more than it should. Discarding the supplied speaker carriers, that fix the speakers in one position, and making Velcro spacers allows fine tuning of their positioning giving far better results.