ReviewUnleash The Whirlwind With The Corum Admiral AC-One 45 Openworked Tourbillon

Considered the most advanced watch complication, an epitome of superlative horological craftsmanship, the tourbillon—French for ‘whirlwind’—was developed in 1795 for pocket watches and patented by French-Swiss watchmaker Abraham-Louis Breguet. Here, the escapement and balance wheel are mounted in a rotating cage in an effort to negate the effect of gravity, which impacts the accuracy of the movement whenever the watch is static for a considerable period of time. Joining this league of extraordinary timepieces is the Corum Admiral AC-One 45 Openworked Tourbillon, a tour de force of workmanship and exceptional aesthetics.

At the heart of the watch sits the CO 298 automatic movement that powers the hours and minutes, the small seconds—via a three-minute counter at nine o’clock—and the tourbillon function. This durable calibre has 39 jewels and beats at 28,800vph (4Hz). It offers the wearer a power reserve of 42 hours, which is cleverly indicated at three o’clock. The exhibition caseback gives you a glimpse of the movement. The timepiece offers a water resistance of 100m.

With a case size of 45mm, crafted in grade-5 titanium, the Admiral AC-One 45 Openworked Tourbillon has a bold presence on the wrist

₹54,87,000

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Another variant of the timepiece comes in a lovely rose gold case, meant for the more flambpoyant horologists out there

₹61,30,000

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The Admiral line’s iconic dodecagonal case—with its sharp angles slightly rounded and less prominent—is instantly recognisable, crafted in either grade-5 titanium or 18-karat rose gold. At 45mm, the case is large, bold and masculine, ensuring that the timepiece stands out when donned on the wrist. The skeletonised brass dial sports nautical flags as hour markers transferred in grey.

The skeletal dial keeps the focus on what's important about this watch—the CO 298 automatic movement ticking within

₹61,30,000

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It offers the wearer a power reserve of 42 hours, which is cleverly indicated at three o’clock

₹61,30,000

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While the titanium variant is for those with a subtler sensibility, the rose gold watch is a brilliant choice for the horologists who want to distinguish themselves from the crowd. Both the watches are fitted with a bi-material strap—rubber on top and synthetic textile on the bottom—which makes it extremely comfortable to wear.

The skeletonised brass dial sports nautical flags as hour markers transferred in grey

₹54,87,000

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The Admiral line’s dodecagonal case—with its sharp angles slightly rounded and less prominent—is instantly recognisable

₹54,87,000

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The interesting design and arresting skeletal dial ensure that the timepiece stands out when donned on the wrist

₹54,87,000

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The highly accurate tourbillon function of the watch is beautifully showcased at the six o'clock position

₹54,87,000

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The design aesthetic of this delightful and powerful timepiece from Corum is another feather in the cap of the famous Admiral line. While its nautical inspirations are more subdued here, what stands out is the incomparable movement ticking within. We’re seeing more and more brilliantly crafted and competitively priced tourbillons in the market, however this watch is definitely ahead of the curve. Corum’s signature craftsmanship, its place in the beloved Admiral collection, and stunning looks, coupled with its mechanical prowess, make the Admiral AC-One 45 Openworked Tourbillon a peerless timepiece that is in a league of its own.