Ulysse Nardin 3723-170-2C/3A Diver X Skeleton OPS 44mm Watch

Ulysse Nardin Diver X Skeleton Ops 44 mm – Ref. 3723-170-2C/3A

The Ulysse Nardin Diver X Skeleton Ops (Ref. 3723-170-2C/3A) redefines diver aesthetics with bold skeleton styling and high-tech materials. Combining avant-garde design with maritime heritage, this 44 mm timepiece showcases Ulysse Nardin’s in-house mechanical excellence and modern craftsmanship.

Technical Strength Material Innovation

Encased in lightweight titanium with a black DLC finish, the 44 mm case is both sporty and refined. A contrasting Carbonium® bezel adds visual depth and reliable grip, while the sapphire caseback reveals the inner workings of the movement. This diver is water-resistant to 200 meters (20 ATM), ensuring rugged capability without sacrificing wrist comfort.

Spectacular Skeleton Dial

At 3723-170-2C/3A heart lies a dramatic skeletonized dial built around Ulysse Nardin’s signature “X” motif, revealing the gears and bridges of the caliber UN‑372. Sleek baton indices and hands—coated in beige Super-LumiNova—provide excellent contrast and nighttime visibility against the dark skeleton backdrop. The diver-inspired aesthetic is dynamic and architectural.

Caliber UN‑372: Mechanical Mastery

The movement is Ulysse Nardin’s proprietary skeleton caliber UN‑372, operating at 21,600 vph (3 Hz) with a robust 72‑hour power reserve. It features silicon components for the anchorage and escapement, ensuring accuracy and resistance to magnetism. With 171 parts across 23 jewels, it delivers mechanical transparency and horological sophistication.

On-Wrist Styling Strap Options

Ref. 3723-170-2C/3A is offered with a complimentary rubber strap in khaki green, accented by a black PVD or ceramic folding clasp branded with Ulysse Nardin. The alternative /0A version offers a matching fabric strap, part eco-conscious and part rugged aesthetic. Both are designed to suit dynamic lifestyles and marine environments.

Features at a Glance

• 44 mm titanium case with BLACK DLC coating Carbonium® bezel
• Skeleton dial with pronounced “X” motif and luminous indices
• UN‑372 skeletonized automatic caliber, 72 h power reserve
• Water resistance: 200 m (20 ATM)
• Strap: khaki green rubber on this reference; fabric optional
• Caseback: sapphire exhibition
• Elegant, modern design tailored for bold collector tastes

What Makes 3723-170-2C/3A Unique

The Diver X Skeleton Ops challenges traditional diver profiles, introducing transparency and architectural flair via full mechanical visibility. The fusion of black DLC titanium and Carbonium® materials imparts technical durability with unexpected texture. UN‑372’s skeleton structure transforms the movement into part of the design, delivering both function and form in harmony.

Ideal For…

— Watch collectors seeking mechanical drama combined with sport-inspired reliability.
— Connoisseurs of lightweight, high-tech materials in daily wear.
— Style enthusiasts wanting an edgy yet refined diver with visible movement.

Conclusion

The Ulysse Nardin Diver X Skeleton Ops, Ref. 3723‑170‑2C/3A, is a striking hybrid: precision engineering meets daring aesthetic. With its skeleton dial, advanced UN‑372 caliber, durable materials, and modern silhouette, it stands out as a standout piece in contemporary dive watch design. Equipped for performance and designed for attention, it is a refined choice for those who live on the edge of extreme elegance.