The Spinnaker Cahill series is one of the most popular and versatile in the whole brand catalog. Its mixture of palatable colorways, timeless designs, and modern proportions has made it a fan favorite, but the recent trend toward more classical diameters has created a gap in the market that is now filled by the Spinnaker Cahill Mid-Size Automatic watch. The Mid-Size is not only reducing in width but also thickness (down to 13mm from 16mm), resulting in a comfortable, low-profile desk-diver that looks at home with both suits and shorts.

At 40mm, the Spinnaker Cahill Mid-Size shaves 3mm off its forerunner’s diameter. The scaled-back proportions do no harm to the watch’s functionality or robustness, with 150 meters of water resistance retained, achieved through excellent machining tolerances, a threaded caseback, and a screw-down crown. Impressively, the Cahill Mid-Size Automatic is fitted with an anti-reflective sapphire crystal that offers an excellent view of the textured dial beneath.

It was important for the brand to give the dial a distinct character so that it stood out from its larger predecessor in more ways than its dimensions alone. The new Mid-Size has a modern design with oversized hour markers treated with generous helpings of Swiss Super-LumiNova to offer maximum legibility in poor light. The 3 o’clock marker makes way for a neat and unobtrusive date window, while a flash of red or orange text just above the 6 o’clock marker brings the display to life.

Surrounding the dial is a uni-directional timing bezel with a luminous glass insert. The pared-back sans serif font is easy to read and complements the restrained design and layout of the dial. There are three models available in this new sub-collection: two models with an untreated 316L stainless steel case with either a black (SP-5075-11) or blue (SP-5075-22) dial and one blackened case and bracelet with gold accents (SP-5075-33).

Inside the Spinnaker Cahill Mid-Size is the tried-and-tested Miyota 8215 movement, renowned throughout the industry as a cost-effective and highly reliable Japanese alternative to Swiss-made calibers. The 8215 caliber boasts automatic- and hand-winding, a date display, a 42-hour power reserve, and an operating frequency of 21,600vph. A branded rotor weight is visible through the display caseback.

The wearability of the Mid-Size is improved by its tapering bracelet, which starts at 20mm between the lugs before narrowing towards the buckle. The buckle itself is a secure fold-over design, which, along with the bracelet links, is made from solid stainless steel as well, adding a reassuring heft to the timepiece. The three options available are priced at $350 for references SP-5075-11 and SP-5075-22 and $400 for reference SP-5075-33. ABlogtoWatch readers can also purchase the Cahill Midsize for 20% off by using the code “ABW20” during checkout on spinnaker-watches.com.