Why not both? https://en.wikipedia.org/wiki/Spring_Drive Advertised at +-15 seco...

		poooogles on Dec 12, 2023 \| parent \| context \| favorite \| on: Mechanical Watch (2022) Why not both? https://en.wikipedia.org/wiki/Spring_Drive Advertised at +-15 seconds a month, but in reality it's much better than that.