| Reference Ocarat | #100521 |
| Reference | HD1 «Impérial» |
| Brand | Humbert-Droz |
| Product Type | Watch |
| Gender | Men |
| Color | Black |
| 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 | Matte Open heart |
| 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 |
Humbert-Droz is a French company with roots going back to 1956, crafting timepieces in the finest watchmaking tradition - celebrated for the quality of their movements. The HD1 Impérial, offered as a limited edition, blends aesthetics with technical excellence. Its cushion-shaped case measures 43 mm in diameter and 13.5 mm in thickness. Crafted from 316L stainless steel with a black PVD coating, it sports a brushed finish that enhances the watch's appeal. The surface is secured by 4 screws, and the dial is protected by a mineral crystal. On the right side of the case, a crown guard fully shields the screw-down crown - finished in carbon black - which is used to set the hours and minutes. On the caseback, a large transparent window set into the screw-down back lets you admire the movement and oscillating weight in all their glory. The caseback provides water resistance to 10 ATM.
The brand unveils a dial designed to impress. Laid out for easy time reading, it features an open-heart finish at 12 o'clock against a matte black backdrop. Its perimeter is framed by a minute track surrounding Arabic numerals at 3, 6, and 9 o'clock, with baton indexes marking the remaining hours - all encircled by a seconds graduation on the outer rim. The sword-shaped hour and minute hands wear a satin black finish and feature a white luminova insert for easy reading in low-light conditions. The seconds hand ends in an arrow tip and shares the same luminescent treatment. Finally, the brand signature and movement type are displayed just above 6 o'clock.
This Humbert-Droz HD1 watch is powered by a Swiss-made automatic mechanical movement. Featuring 25 jewels and beating at 28,800 vibrations/hour, the ETA 2824 caliber delivers precise analog timekeeping with a power reserve of 38 hours.
This model comes fitted with a genuine alligator leather strap and a steel pin buckle. In black with tone-on-tone stitching and a French flag detail near the 5 o'clock lug, it's as elegant as it is versatile - the perfect finishing touch for any outfit.
This model offers water resistance to 10 atmospheres, or 100 meters. That's a genuinely water-resistant watch! Ready to dive into any aquatic adventure - from puddles to the pool - this timepiece takes a splash without complaint. Showers, baths, and lap swimming are all fair game. That said, our Ocarat watchmaking experts want you to know that this model, while water-resistant, is not suited for diving (professional or recreational) and should be kept away from high-pressure cleaning equipment. We also recommend not operating the crown or pushers while the watch is submerged.





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HD1 «Impérial» Watch
(Ref. 100521)