https://monochrome-watches.com/a-technical-perspective-defining-and-understanding-hybrid-watches/
A technical guide to what can be defined as hybrid in watchmaking, and some examples including Spring Drive and more.
Very interesting article, thanks. But it leaves me with one question: Why is power reserve such a big thing in mechanical watches? If they are accurate to within 20 seconds a week at the very best, I'll have to set the time at least weekly and can give it a few winds, as well. So why would one need a power reserve of several weeks?
I'm guessing that with mechanical watches, accuracy isn't the top priority for most users.
If they highly regard accuracy, then they'd be more likely to buy high-end HAQ watches.