In idle, it finally ran out of battery after 11 days. To be honest I was expecting 48 hours max. I am thoroughly impressed with it!
I've since set it to raise wrist (that's when "none" disappeared), I charged it after 4 days I think when it was still at 31%. It can't seem to charge more than 92%. By then it makes a periodic buzzing noise.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!