| Reference Ocarat | #100512 |
| Reference | HD REA-Chrono «Drago» |
| Brand | Humbert-Droz |
| Product Type | Watch |
| Gender | Men |
| Color | Black Gray |
| Material | Steel |
| Material Quality | 316L stainless steel |
| Finish | Black PVD Matte (Brushed / Satin) |
| Warranty | 2 Years |
| Thickness (in mm) | 14,00 |
| Diameter (in mm) | 48,00 |
| Labels and Certificates | Authorized Retailer Limited Edition |
| Case Shape | Cushion |
| Bezel | Fluted Effect Rotating |
| Dial Finish | Brushed |
| Watch Case Back | Screwed caseback |
| Glass Quality | Mineral Crystal |
| Watch Case Types | Big Date (double aperture) |
| Buttons | 1 Crown 2 Pushers |
| Screw Crown | Yes |
| Water Resistance (in ATM) | 10 |
| Movements | Quartz |
| Movement Type | Swiss Movement |
| Movement Brand | Ronda |
| Calibers (Movements) | Ronda Startech 5040-B |
| Calendar and Time | Big date Dates Hours Minutes Seconds |
| Chronograph Function | Yes |
| Counters and Durations | 30 min Small seconds |
| Timekeeping and Measurement | Chronograph to 1/10th of a second Chronometer |
| Display Type | Analog (hands) |
| Display Specifications | Indices and railroad track Luminescent hands and indexes |
| Number of Counters (Additional) | 3 |
| Bracelet Material | Silicone |
| Strap Color | Black |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 24,00 |
| Limited Edition (Collector) | Yes |
Four generations of passionate craftspeople - respectful of watchmaking traditions yet boldly forward-looking - have built the Humbert-Droz name over more than 60 years. Charm and sophistication are at the heart of this REA-Chrono «Drago» watch. Its lines are sculpted with remarkable expertise, wrapped in a 316L stainless steel case with a black PVD treatment that lends it a sleek, refined presence. The cushion-shaped case measures 48 mm in diameter and 24 mm in thickness, and is framed by a black fluted bezel with graduations marked every 5 units. The bezel surrounds a mineral crystal protecting the dial. On the right side of the case at 3 o'clock, a crown lets you set the time. At 2 and 4 o'clock, two pushers control the chronograph counters. Finally, a screw-down caseback ensures excellent water resistance to 10 ATM.
This watch reveals a dial that's as functional as it is beautiful. Its silver-toned brushed finish makes for effortless time reading, while luminescent markers ensure visibility in the dark. At the center, two rhodium-plated stainless steel hands in black track the hours and minutes, joined by a slim red seconds hand. They sweep across baton indexes to deliver reliable, precise analog display. At 3, 6, and 9 o'clock, three sub-dials show 60 seconds, 1/10 of a second, and 30 minutes respectively. A large date window sits just below 12 o'clock, and the hour, minute hands and baton indexes all feature a luminescent treatment for easy reading in low-light conditions. The brand signature appears below 12 o'clock.
This fine timepiece runs on a quartz movement - Swiss-made with the Ronda 5040.B caliber, assembled in France - delivering reliable timekeeping and precise chronograph performance.
This timepiece's strap is crafted from black silicone. Soft and comfortable on the wrist, it lends the watch a sport-chic edge. With a 24 mm lug width, it pairs effortlessly with any look and fastens securely with a pin buckle.
With water resistance to 100 meters - or 10 ATM in the language of watchmaking - this bold timepiece is equally at home at a black-tie event or in the water. Wear it in the shower, the bath, or the pool (yes, even for an intense lap session). Just keep in mind: our watchmaking experts confirm this model is not designed for scuba or freediving, and should never be used with high-pressure water equipment. Stick to showers, baths, and swimming - and don't operate the pushers or crown while submerged.




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HD REA-Chrono «Drago» Watch
(Ref. 100512)