I came here to complain about the fact that it’s single use. Seams like everyone here thinks the same. I don’t care I have to spend an hour tearing it apart to pull out the old battery and put in a new one. I was really interested until I realised it was single use, complete deal breaker for me.

Hopefully someone will find out a way to replace the battery, cause this would genuinely save me so much I have the exact same problem the creator of the ring has.