Ulysse Nardin 3723-170-2B/3A Diver X Skeleton Azure 44mm Watch

Ulysse Nardin Diver X Skeleton Azure – Reference 3723-170-2B/3A

The Ulysse Nardin Diver X Skeleton Azure (Ref.3723-170-2B/3A) is a bold statement in modern dive watch design: a 44 mm skeletonized powerhouse wrapped in technical materials, showcasing both mechanical artistry and sea-ready performance.

Robust Titanium Case with Carbonium® Bezel

This 44 mm case is crafted from lightweight titanium with black DLC coating, combining resilience and wearability with a distinct matte finish. A textured Carbonium® bezel—made from recycled carbon fiber—enhances grip and visual appeal. The watch offers water resistance up to 200 meters (20 ATM), ideal for professional use and daily wear alike.

Skeleton Dial with Azure Accents

The open-worked dial showcases Ulysse Nardin’s signature “X” architecture, revealing the engineered mechanisms within the calibre UN‑372. Azure blue highlights trace the edge of the “X” and tip the seconds hand, creating a stunning contrast against the monochrome skeleton backdrop. Broad baton markers and luminous hands ensure legibility in low light.

Movement Excellence – Calibre UN‑372

Powered by the in-house UN‑372 automatic movement, the Diver X Skeleton Azure 3723-170-2B/3A has a frequency of 3 Hz and offers up to 72 hours of power reserve. With its enlarged oscillator, silicon escape components, and skeleton bridges, this caliber transforms visual appeal into mechanical prowess.

Straightforward Strap & Comfort

The /3A version is fitted with a blue rubber strap that complements the dial accents and the technical case design. It’s secured with a ceramic buckle branded with the Ulysse Nardin anchor logo, offering sporty comfort with luxury detail.

Key Features at a Glance

• Reference: 3723‑170‑2B/3A
• Case: 44 mm black DLC-titanium, ~15.7 mm thick, 200 m WR
• Bezel: Carbonium® unidirectional rotating bezel
• Dial: Skeleton “X” design with azure accents and luminous markers
• Movement: Automatic UN‑372, 72‑hour power reserve, silicon tech
• Strap: Azure-blue rubber with ceramic buckle

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

• The full skeleton architecture lets the UN‑372 movement become the dial itself, offering mechanical drama rarely seen in dive watches.
• Use of Carbonium® gives both strength and texture while echoing Ulysse Nardin’s maritime heritage.
• Azure color details unify the skeleton “X” motif and rubber strap, delivering a modern diver with visual cohesion and technical precision.

Perfect for

Collectors and modern explorers alike will find the Diver X Skeleton Azure compelling. With its high-tech titanium build, openworked dial, and refined performance, it’s ideal for those looking to merge aquatic readiness with avant-garde horological expression.