What is the vertical drive on this watch?

It is a crown system that winds and sets the movement without a traditional stem running through the case. The crown sits flush against the case side, which gives the watch a cleaner profile and a different feel when winding.

Is the ceramic case durable?

Ceramic resists scratches and keeps its finish far longer than steel. It is brittle, though, so a hard knock against a sharp edge can chip or crack it, and replacing a ceramic case part is expensive.

How does it compare with the steel IWC Pilot's Chronograph?

This watch is larger at 44 mm, uses ceramic instead of steel, and has a three-hand movement with a date rather than a chronograph. The steel chronograph is more classic and easier to service; this one is more scratch-resistant and mechanically unusual.

The watch on its rubber strap with pin buckle, plus box and papers.

Is 44 mm too big for everyday wear?

It wears large and suits wrists roughly 7 inches and up. Ceramic keeps the weight down, but the diameter and height are noticeable under a cuff.

Is it water resistant enough for swimming?

It is rated to 100 meters, which covers swimming and showering. The screw-down crown helps, but rinse it after salt water and have the seals checked at service.