| Reference Ocarat | #61700 |
| Reference | WRB 1101 |
| Brand | Ralf Tech |
| Product Type | Watch |
| Gender | Men |
| Color | Black |
| Material | Steel |
| Material Quality | 316L stainless steel |
| Finish | Black PVD |
| Warranty | 2 Years |
| Diameter (in mm) | 39,00 |
| Labels and Certificates | Authorized Retailer Limited Edition |
| Bezel | Unidirectional |
| Dial Finish | Matte |
| Watch Case Back | Screwed caseback |
| Crystal Shape | Domed |
| Glass Quality | Sapphire Crystal |
| Glass Treatment | Anti-Reflective Coating |
| Buttons | 1 Crown |
| Screw Crown | Yes |
| Water Resistance (in ATM) | 20 |
| Movements | Automatic (rotor) |
| Movement Type | Japanese Movement |
| Movement Brand | Ralf Tech |
| Calibers (Movements) | RTA 003 |
| Calendar and Time | Hours Minutes Seconds |
| Power Reserve (Maximum Duration) | 44 hours |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Indices and railroad track Luminescent Hands SuperLuminova |
| Bracelet Material | Silicone |
| Strap Color | Black |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 22,00 |
| Buckle Width (in mm) | 20,00 |
| Limited Edition (Collector) | Yes |
| Activities | Swimming / Diving Technical Adventure Yachting / Sailing |
Limited edition of 100 pieces.
The Watch
Founded by professional diver Frank Huyghe, Ralf Tech has carved out a bold presence in the world of marine timekeeping with its high-precision, professional-grade tech pieces. The WRB First Edition Black is the result of two years of development and has earned the endorsement of the French Army Divers - setting the bar for what a dive watch can deliver. Limited to just 100 pieces worldwide, it features a 316L surgical steel case for maximum resistance to time and impact, finished with a black PVD coating. Its 39 mm diameter fits any wrist with ease. A unidirectional bezel with 120 clicks lets you track your performance underwater. The dial is protected by a domed, anti-reflective sapphire crystal for optimal legibility in any conditions. The screw-down crown sits at four o'clock for winding the movement, while the screw-down caseback bears the watch's individual identification number. This dive watch delivers water resistance to 200 meters.
The Dial
The round matte black dial is both striking and functional, with finely crafted, high-quality indicators throughout. At its center, two skeleton-style hands machined from 316L steel with a 2N18 gold-plated treatment point to the hours and minutes, accompanied by a slim, elongated seconds hand sweeping steadily across the dial. Hour markers are rendered in both batons and Arabic numerals for clear, unambiguous readability. All indexes feature a SuperLuminova Vintage treatment for optimal visibility in underwater environments. A minute track also runs clearly between each index for added reading precision. Every time indicator is built to resist wear and deliver flawless timekeeping no matter where you are. Ralf Tech signs its model just below the twelve o'clock index, and reaffirms the watch's water resistance rating and French origin at six o'clock.
The Movement
True to form, an automatic movement powers the heart of this timepiece. Developed in-house by Ralf Tech, the RTA 003 caliber delivers a 44-hour power reserve and drives the hour, minute, and seconds hands with exceptional precision and durability.
The Strap
A black silicone strap completes this watch for maximum everyday comfort - and keeps up with your aquatic sports sessions without missing a beat. Ultra-flexible and water-resistant, this material is a perfect match for a dive watch built to last. The strap measures 22 mm at the lugs and 20 mm at the buckle, secured with a pin buckle. It also comes with a second black zulu strap.
Water Resistance
Rated at 20 atmospheres - equivalent to 200 meters - this watch qualifies without hesitation as a true dive watch. Our watchmaking experts agree: while it handles showers, baths, lap swimming, freediving, and recreational scuba with ease, it is not designed for extreme deep-sea diving, where extreme pressure would ultimately compromise its water resistance. For professional divers pushing depth limits, we recommend exploring models rated 30 atmospheres and above. We also advise against operating the pushers or crown while submerged, to maintain a perfect seal at all times.



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WRB Automatic Black First Edition Watch WRB 1101
(Ref. 61700)