Ralf Tech
WRB Ocean Automatic Metal - Full-Set Limited Edition

RALF TECH WRB Automatic Ocean Metal reference WRB 1203, satin-finished 39 mm 316L surgical steel case, high-legibility ocean blue dial, automatic RTA003 movement operating at 21,600 vibrations per hour, approximately 40-hour power reserve after full winding, 24 jewels, unidirectional 120-click rotating bezel with black anodized aluminium insert, screw-down crown, 2.5 mm domed anti-reflective sapphire crystal, 200-meter water resistance, heavy duty steel bracelet with easy lock folding clasp and second black silicone strap, limited edition of 100 pieces, production 2026, Full Set watch fully inspected and covered by a 3-year warranty by Mostra.

“There are dive watches that evoke the sea through their function, and others that seem to retain its color, its depth and that sense of horizon one feels when the eye is caught between surface and current.”

It belongs to that more sensitive reading of the dive watch, the one in which the instrument preserves its rigor while allowing something more visual, more maritime, almost more personal to appear. The RALF TECH WRB Ocean Metal WRB 1203 takes the compact and professional architecture of the WRB and gives it another presence through its ocean blue dial, more open, more luminous, as if the watch already carried something of the open sea within it.On the wrist, the 39 mm steel case immediately finds its balance. This dimension remains one of the great strengths of the WRB, because it allows the watch to preserve genuine dive-watch credibility without falling into excessive volume. It wears naturally, on a slender wrist as much as on a broader one, and this ease of use gives it rare versatility. The heavy duty steel bracelet reinforces the sensation of solidity, brings a more structured reading than silicone, and turns this Ocean Metal version into an everyday watch, capable of moving from aquatic use to an urban presence without ever losing its identity.The ocean blue dial forms the center of gravity of this reference. It is not a decorative blue, but a deep blue directly connected to the marine world, to the reading of water, to that shifting shade found when light crosses the surface. The SuperLuminova-treated indexes and hands ensure immediate legibility, while the absence of visual overload preserves the clarity that remains essential to dive watches. The watch stays legible, sharp, direct, with that simple organization that gives strength to well-conceived instruments.

The 120-click unidirectional rotating bezel extends this logic of use. It allows elapsed time to be measured, accompanies an immersion, a swim, a moment at sea, or simply restores that mechanical gesture which gives a dive watch a particular relationship with the person who wears it. The black anodized aluminium insert creates a strong contrast with the blue dial, the luminous marker supports reading in low light, and the whole reminds us that this WRB Ocean Metal remains above all a watch built to be used.Within the RALF TECH range, the WRB occupies a particularly accurate position. It takes the spirit of the maison’s larger dive watches and translates it into a more restrained, more universal, easier-to-live-with format. Less imposing than the WRV and WRX models, it nevertheless preserves the essentials, water resistance, unidirectional bezel, screw-down crown, legibility and robustness. This Ocean Metal WRB 1203 version, limited to 100 pieces, adds to that foundation a more maritime, more luminous reading, and a steel bracelet that reinforces its status as a complete, durable watch designed to accompany the wearer over time.

From a collector’s perspective, this limited edition draws its interest from its coherence. The ocean blue dial, the 39 mm format, the metal bracelet, the limited production and RALF TECH’s deep connection to the world of diving come together to form a highly identifiable piece within the WRB family. It does not attempt to replay the codes of the great historical Swiss dive watches, it proposes a French reading of the contemporary dive watch, compact, robust, sincere and linked to real use.The automatic RTA003 movement supports this philosophy with consistency. It operates at 21,600 vibrations per hour, offers an approximately 40-hour power reserve after full winding and rests on a 24-jewel architecture chosen for robustness, regularity and ease of maintenance. This mechanism favors reliability and use, in the spirit of a professional watch meant to be worn often, kept on the wrist, and expected to follow without requiring excessive attention.The heavy duty steel bracelet gives this WRB Ocean a more accomplished presence. Its links extend the case with coherence, the easy lock folding clasp secures the wearing experience, and the whole brings the watch a more horological density. The second black silicone strap allows another interpretation, sportier, more aquatic, more directly oriented toward the sea. This double configuration is a true advantage, because it allows the watch to be lived in several registers without ever changing its spirit.

Wearing a RALF TECH WRB Ocean Metal WRB 1203 today means choosing a modern dive watch that preserves a genuine relationship with the sea without becoming an object frozen in a showroom imagination. A French, limited, water-resistant, legible and solid watch, carried by a blue dial that gives the instrument a more personal depth. It accompanies an active life, travel, weekends, moments by the water, but also daily life, with that accuracy that makes good watches easy to wear for a long time.This example is offered as a RALF TECH WRB Automatic Ocean Metal WRB 1203 Full Set, with its original set, heavy duty steel bracelet and second black silicone strap, in excellent overall condition, carefully inspected in our workshop. A recent piece, produced in 2026, particularly interesting for an enthusiast of French watches, compact dive watches, limited editions and contemporary instruments genuinely designed for use.Since 2025, the Mostra workshop has become the first certified pre-owned RALF TECH center in the world. This recognition reflects a shared standard with RALF TECH, built on technical mastery, deep understanding of the models and respect for their real-world use. Each RALF TECH watch presented by Mostra therefore benefits from a perspective fully aligned with the spirit of the brand, combining robustness, precision and commitment.

Choosing a RALF TECH from Mostra requires a precise perspective. Each watch is selected with more than 40 years of watchmaking expertise, with attention given to authenticity, coherence and actual condition. This piece has been fully inspected, authenticated and prepared for immediate wear with confidence. You benefit from personalized guidance as well as a 3-year Mostra warranty. Mostra is built on a long-term relationship with its clients, supported by 5-star Google reviews and regular recognition within the professional watchmaking press. A watch such as this is not limited to its color or to its limited series, it inscribes into time a French, robust and deeply maritime way of thinking the dive watch.