I used to use the Zeo sleep monitor (headband version that connects to the smartphone app), but I got tired of trying to make my own headbands and failing. I still have the app, on an old iPhone 4. Replaced them, finally, with a ‘Dreem’ headset, which I never use because jesus that thing is uncomfortable. Why can’t anyone make a headset as good as the Zeo was, even a full decade later?
Anyway, if anyone is still using them and makes their own headbands, and might be willing to make me some that work, I’d be willing to pay. (Even had a theory that maybe making one out of gold-plated wire mesh might make it last longer that I’d be happy to finance an experiment for.)
If not, well, I’d be happy to send them to people who still use them, or want to start again after theirs died. I have three headset units and two charging stations gathering dust.
Message me, either way.