The Navihawk, finally at 40mm.

Citizen’s aviation chronographs have long been large watches, 44mm and up, because a slide-rule bezel and three registers need room. The CA4667 keeps all of it and squeezes the case to 40mm across, 13.2mm thick and 44.6mm lug to lug.

Those last two numbers are the ones to check. The lug-to-lug span is what decides whether a watch overhangs a wrist, and at 44.6mm the Navihawk fits where the larger versions never did.

The outer ring is a circular slide rule of the kind pilots carried before calculators. Rotate the bidirectional bezel to line up two scales and it multiplies, divides, converts units and works out fuel burn and ground speed. It is blue ion-plated with a yellow outer scale in the squadron colours.

Inside, calibre B620 runs a 1/5-second chronograph to 60 minutes across the registers, a 12/24-hour display and a date. It is charged by light through the dial, so nothing here needs a battery.

A Promaster badge carries expectations, and the CA4667 meets them: an anti-reflective sapphire crystal and a 200m, 20 bar rating, which Citizen describes as suitable for swimming, showering and snorkelling. The steel case has sharp, satin-finished facets.

The bracelet is triple-link stainless steel with a fold-over clasp and hidden push buttons. The Blue Angels name and livery are official, produced under licence with the squadron, and this is the smallest case they have appeared on in this catalogue.