How does an automatic watch hold a power reserve?

Question

And how does mere movement power it? Cheers

In: 3

Answer 1

I read the post as “how does the ‘power reserve’ work in an automatic movement.”

Someone described a battery – that’s a kinetic movement. My understanding is that a Kinetic movement is just a quartz movement which is charged by an automatic-esque rotating weight.

I always wondered why certain automatic movements claim 24 or 48 hour power reserves, but I’m thinking that’s the estimated spring windout if the watch is sedentary and fully wound.