| Reference Ocarat | #100522 |
| Reference | HD1 «Royal» |
| 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) | 13,50 |
| Diameter (in mm) | 43,00 |
| Manufacturing | France |
| Labels and Certificates | Authorized Retailer Limited Edition |
| Case Shape | Cushion |
| Dial Finish | Open heart Soleillée |
| Watch Case Back | Exhibition Case Back Screwed caseback |
| Glass Quality | Mineral Crystal |
| Buttons | 1 Crown |
| Screw Crown | Yes |
| Water Resistance (in ATM) | 10 |
| Frequency | 28,800 A/h (4 Hz) |
| Movements | Automatic (rotor) |
| Movement Type | Swiss Movement |
| Movement Brand | ETA |
| Calibers (Movements) | ETA 2824 |
| Calendar and Time | Hours Minutes Seconds |
| Power Reserve (Maximum Duration) | 38 hours |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Indices and railroad track Luminescent Hands |
| Bracelet Material | Alligator leather |
| Strap Color | Black |
| Topstitching | Yes |
| Watch Clasp | Deployment Clasp |
| Lug Width (in mm) | 24,00 |
| Limited Edition (Collector) | Yes |
A well-established name in the world of fine watchmaking, Humbert Droz crafts timepieces that blend technical precision with refined elegance. Built to last, each piece showcases exceptional craftsmanship and durable materials. The brand now unveils its HD1 collection with the Royal model - a limited edition of just 150 pieces. True to its name, this watch features a sophisticated design that elevates your everyday style. Dressed in black, it sports a 316L stainless steel case with a black PVD coating and a distinctive cushion shape. Beautifully striking, the case measures 43 mm in diameter and 13.5 mm thick. The dial sits beneath a mineral crystal, ensuring clear readability, while all adjustments are handled via the black screw-down crown at 3 o'clock - protected by a dedicated crown guard. Finally, this model delivers water resistance of 10 ATM, secured by its numbered screw-down caseback.
This dial reads the time with effortless clarity. It features three hands for hours, minutes, and seconds. Surrounding them are large Arabic numerals and baton indexes tracked by the short hour hand, followed by a minute railway track swept by the long hand. The slender seconds hand with its arrow tip completes the trio. For even easier reading, the outer ring is graduated in increments of 10 with Arabic numerals and 5 with batons. All markers and hands feature luminova treatment for legibility in the dark. The movement type and brand name are signed at 6 o'clock. Opposite, an open heart reveals the watch's inner workings. The dial closes on a grey sunray-finished background.
This timepiece is powered by an automatic ETA 2824 movement. Swiss-made and finished in France, this caliber is a benchmark of reliability. Fitted with 25 jewels and offering a power reserve of 38 hours, it beats at 28,800 vibrations/hour and drives the analog display with precision.
Supple and durable, this strap adorned with the French flag is the perfect companion for your wrist. Crafted from genuine alligator leather, it features a rich black hue that pairs effortlessly with any outfit. At 24 mm wide, it contours naturally around your wrist. Day or night, the stainless steel deployant buckle makes it easy to put on and take off.
This watch offers water resistance of 10 atmospheres, or 100 meters - a genuinely waterproof timepiece. Ready to dive into aquatic adventures with you, from puddles to the pool, this watch handles splashing, swimming, and everything in between without complaint. Showers, baths, and even competitive laps? No problem. That said, our Ocarat watch experts want to be clear: this model is water-resistant, not dive-rated - it is not suitable for scuba or freediving, and should be kept away from high-pressure cleaning equipment. We also recommend against operating the crown or pushers while submerged.





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HD1 "Royal" Watch
(Ref. 100522)