Ralf Tech
WRB Automatic First Edition - Full-Set Limited Edition

RALF TECH WRB Automatic First Edition reference WRB 1001, satin-finished 39 mm 316L surgical steel case, high-legibility matte black dial, automatic RTA003 movement operating at 21,600 vibrations per hour, approximately 40-hour power reserve after full winding, 24 jewels, unidirectional rotating bezel with black insert, screw-down crown, domed anti-reflective sapphire crystal, 200-meter water resistance, black silicone strap with its Full Set equipment, limited edition of 100 pieces, production 2026, pre-owned watch fully inspected and covered by a 3-year warranty by Mostra.

“Some dive watches find their strength in excess, others in that rarer precision which consists in remaining compact, legible and available, like an instrument one could wear every day without ever forgetting its original purpose.”

It belongs to that more direct reading of the professional watch, the one where robustness does not come through excess, but through coherence. The RALF TECH WRB Automatic First Edition WRB 1001 takes the spirit of the maison’s larger dive watches and concentrates it into a 39 mm format, more restrained, more natural on the wrist, more immediately compatible with daily use. It preserves the RALF TECH DNA, water resistance, legibility, solidity, yet within a presence less massive than the larger WRV models, with that accuracy of proportion that gives the watch true versatility. On the wrist, the WRB immediately finds its place. The satin-finished steel case captures light with restraint, without seeking decorative brilliance, and this sobriety reinforces its character as an instrument. The 39 mm diameter allows the watch to preserve real legitimacy as a dive watch while remaining perfectly wearable on very different wrists. It is not confined to a purely sporting register, it accompanies an active day, a journey, a moment by the sea or urban use with the same coherence. The watch remains present, but never intrusive. It keeps that reassuring density of watches made to be used.

The matte black dial forms the center of this reading. It absorbs light, avoids unnecessary reflections and allows the markers and hands to take their place with immediate clarity. Time is read without effort, in the spirit of dive instruments where the eye must understand before the mind begins to interpret. The absence of visual overload reinforces this feeling of calm precision. The dial does not seek to multiply information, it establishes a simple, efficient and lasting hierarchy.The unidirectional rotating bezel extends this logic. It reminds us that the WRB Automatic First Edition is not only a maritime-inspired watch, but a genuine water watch, designed to measure elapsed time, accompany an immersion, a swim, a moment at sea or simply offer that mechanical reference one enjoys finding on a dive watch. The 200-meter water resistance, screw-down crown and domed anti-reflective sapphire crystal give the whole a credibility of use that goes far beyond style alone.

Within the RALF TECH range, the WRB 1001 First Edition occupies a particular place. It represents the founding version of this more compact reading of the RALF TECH dive watch. Less imposing than the WRV, it preserves its spirit, its functions and its solidity, while making them more accessible in daily life through a more restrained ergonomics. From a collector’s perspective, this limited edition of 100 pieces becomes interesting precisely because it marks a first expression, an origin within the WRB family. It does not rely only on a limited edition number, but on its position in the construction of the range. 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 its robustness, regularity and ease of maintenance. It is not a movement designed for visible demonstration, but for real reliability. It follows the rhythm of the wrist with discretion, in the spirit of a professional watch meant to be worn often, without unnecessary complication, without misplaced fragility.

The black silicone strap reinforces this functional dimension. It naturally supports the aquatic vocation of the watch, bringing flexibility, resistance and comfort, while preserving a technical reading fully coherent with the case and dial. Depending on the Full Set equipment, this WRB can also be lived with a more field-oriented, lighter, more military interpretation, particularly when associated with a textile or Zulu strap. This versatility is part of its interest, because it allows the watch to change register without ever changing identity.Wearing a RALF TECH WRB Automatic First Edition WRB 1001 today means choosing a modern French dive watch that does not seek to replay a foreign icon, but to propose its own reading of the professional instrument. A compact, robust, legible, water-resistant, limited piece, capable of following an active life without becoming precious in the wrong sense of the word. It wears naturally, yet preserves that collector dimension linked to its limited series, its First Edition status and its place in RALF TECH’s recent history. This example is offered as a RALF TECH WRB Automatic First Edition WRB 1001 Full Set, 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 technical sheet, it inscribes into time a French, compact and sincere way of thinking the professional dive watch.