Is the Spinnaker Croft a good first automatic watch?

Yes. It is a straightforward three-hand automatic with a dive bezel, and the 40mm case is easy to wear. It gives you mechanical ownership without the cost of a Swiss diver.

How does the 40mm case fit?

40mm is mid-size for a dive watch, so it sits comfortably on most wrists, including smaller ones. It wears smaller than the 42–44mm divers many brands sell.

Does it need a battery?

No. It is self-winding, powered by the motion of your wrist, and it stops if left unworn for a couple of days. Wind it by hand or shake it to restart.

Is it safe to swim with?

It is built as a dive-style watch with a rotating bezel and screw-down construction typical of the category. Check the depth rating on the caseback before swimming or diving.

How accurate is the movement?

It is a standard automatic, so expect it to gain or lose a few seconds a day rather than match a quartz watch. That drift is normal for mechanical movements at this level.

What comes in the box?

You get the watch on its strap or bracelet, depending on the version, plus the manufacturer's paperwork. Check the listing for the exact strap and packaging included.