Is the Alpina Alpiner Regulator automatic or hand-wound?

It is hand-wound. The calibre is based on the ETA Unitas 6498, a manual-wind movement, so you wind it yourself rather than relying on rotor motion.

How does a regulator dial work?

The hour, minute and seconds each get their own sub-dial or track instead of sharing one center. That makes each unit easier to read on its own, but reading the full time takes a glance longer than a standard three-hand dial.

Will a 45 mm case fit my wrist?

It is a big watch. Wrists under about 7 inches will likely find it oversized and top-heavy. Try it on if you can, or check the lug-to-lug measurement against a watch you already own.

Yes. It is rated to 10 ATM (100 m), which covers swimming and snorkeling. Avoid pressing the crown underwater and have the seals checked periodically.

The watch on its stainless steel bracelet, with the folding clasp fitted. Presentation varies by seller, so confirm whether papers and the manufacturer's warranty card are included before buying.

How does it compare with a standard Alpiner?

The standard Alpiner is a conventional three-hand automatic with a central seconds hand. The Regulator trades that familiarity for a more distinctive dial and a hand-wound movement, at the cost of convenience and a slimmer profile.