Ulysse Nardin 3723-170-2C/0A Diver X Skeleton OPS 44mm Watch

Ulysse Nardin Diver X Skeleton OPS – Ref. 3723-170-2C/0A (Fabric Strap Edition)

Meet the Ulysse Nardin Diver X Skeleton OPS, reference 3723-170-2C/0A — a daring reinterpretation of the dive watch, blending avant-garde skeleton engineering with sustainably sourced materials and precision Swiss mechanics.

High-Tech Titanium Case & Carbonium® Bezel

Housed in a 44 mm case of lightweight titanium with a sleek black DLC finish, 3723-170-2C/0A is robust yet wearable. The unidirectional rotating bezel, crafted from Carbonium®—a recycled carbon composite harvested from aircraft construction waste—adds both grip and aesthetic complexity. The case stands 15.7 mm thick and offers 200 m water resistance.

Skeleton “X” Dial Structure

The dial is a bold open-worked architectural stage featuring Ulysse Nardin’s signature “X” motif in black PVD. This structural centerpiece houses the automatic movement in full view, with beige-toned Super-LumiNova on hands and indexes ensuring maximum legibility against the skeletonized background.

Movement Excellence – Calibre UN‑372

Beating at the core is the in-house UN‑372 skeleton calibre, built to impress with its oversized silicon balance wheel and 72-hour power reserve. Operating at 3 Hz with 171 components and 23 jewels, the movement balances fine finishing and visible performance. A Carbonium® barrel cover at 12 o’clock ties into the bezel design.

Eco-Fabric Strap

This /0A edition features a khaki-green fabric strap, partially made from recycled fishing nets, paired with a scratch-fastening Velcro closure. The strap complements the rugged visual language and environmental ethos of the Diver X.

Key Technical Specifications

• Reference: 3723‑170‑2C/0A
• Case: 44 mm black DLC titanium, 15.7 mm thick, 200 m WR
• Bezel: Carbonium® unidirectional rotating bezel
• Dial: Skeleton “X” with beige Super-LumiNova indices & hands
• Movement: UN‑372 skeleton automatic, 3 Hz, 72-hour power reserve
• Strap: Khaki-green fabric (recycled nets) with Velcro closure
• Caseback: Black DLC titanium with sapphire exhibition window

Unique Characteristics

• The bold skeleton “X” dial construction distinguishes it as a mechanical timepiece and visual centerpiece.
• Use of Carbonium® on bezel and barrel cover introduces a sustainable finish with aerospace heritage.
• Fabric strap made from recycled fishing-net material—echoing Ulysse Nardin’s commitment to ocean preservation.

Why 3723-170-2C/0A Stands Out

Unlike conventional dive watches, the Diver X Skeleton OPS 3723-170-2C/0A transforms mechanical architecture into design itself. The open skeleton structure, bold “X” motif, and sustainability-driven components blend to create a highly expressive yet technical timepiece. With robust construction, 72-hour autonomy, and a lightweight yet strong profile, this watch aligns with both avant-garde aesthetics and purpose-driven watchmaking.

Ideal For

Collectors and modern explorers who appreciate mechanical artistry, traceable materials, and wrist presence: whether for daily wear or as a statement piece, the Diver X Skeleton OPS is engineered to impress.