| Reference Ocarat | #100515 |
| Reference | HD1 «Rubis» |
| Brand | Humbert-Droz |
| Product Type | Watch |
| Gender | Men |
| Color | Black Red |
| 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 | Bovine leather |
| Strap Color | Black |
| Bracelet Material Finish | Carbon-pattern leather |
| Topstitching | Yes |
| Watch Clasp | Deployment Clasp |
| Lug Width (in mm) | 24,00 |
| Limited Edition (Collector) | Yes |
Craftsmanship and passion define every creation from Humbert Droz. For four generations, the brand has developed timepieces that honor watchmaking tradition while blending technical precision with a distinctive aesthetic - a true joy for watch enthusiasts. This stunning HD1 model features a 316L stainless steel case measuring 43 mm in diameter with a 13.5 mm thickness, perfectly suited for men's wrists. Its cushion-shaped case is finished with a black PVD treatment and secured with 4 screws. The dial is protected by a mineral crystal, and the crown at 3 o'clock, tucked beneath a crown guard, handles hand-setting. To finish, the watch features a skeletonized screw-down caseback in steel that reveals the movement in action while ensuring a water resistance of 10 ATM.
Be captivated by the stunning ruby red dial, elevated by a sunray finish that radiates brilliance. It showcases baton-shaped indices and Arabic numerals in steel, complemented by a white minute railroad track. Two sword-shaped hands in satin steel and a slender seconds hand in the same material complete the display. The former pair indicates the hours and minutes, while the arrow-tipped seconds hand tracks the seconds. All are luminescent, ensuring legibility in any lighting condition - even in complete darkness. With an open heart at 12 o'clock, this watch exudes character and encapsulates the brand's expertise, with its name and movement reference displayed just above 6 o'clock.
This sophisticated watch is powered by an automatic movement made in France. Its ETA 2824 caliber delivers unquestionable reliability and durability. It drives the hour, minute, and second hands smoothly for precise analog timekeeping, with a power reserve of 38 hours and a beat rate of 28,800 BPH.
Humbert-Droz pairs this timepiece with a supple, comfortable strap featuring a deployant clasp and a 24 mm lug width that sits beautifully on the wrist. Stitched in blue, white, and red as a nod to the French flag, this strap is crafted from black carbon-embossed bovine leather with black stitching. It reinforces the bold, refined character of the watch and makes a striking impression on the wrist.
This model offers a water resistance of 10 atmospheres, or 100 meters. We're talking about a truly water-resistant watch! This stylish timepiece is ready to dive into aquatic adventures with you. From puddles to the pool, it handles water exposure without complaint - shower, bath, and recreational swimming are no problem. That said, Ocarat's watchmaking experts want you to know that while this model is water-resistant, it is not designed for diving (professional or recreational) and should be kept away from high-pressure cleaning equipment. We also recommend keeping the crown and pushers dry during immersion.





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HD1 "Rubis" Watch
(Ref. 100515)