| Reference Ocarat | #127228 |
| Reference | HDB009K1 |
| Brand | Seiko 5 Sports |
| Product Type | Watch |
| Gender | Men |
| Color | Brown Gray |
| Material | Steel |
| Material Quality | Stainless Steel |
| Finish | Matte (Brushed / Satin) Polished / Shiny |
| Warranty | 3 years |
| Thickness (in mm) | 13,20 |
| Diameter (in mm) | 41,00 |
| Manufacturing | Japan |
| Warranty Type | International |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Round |
| Bezel | Bidirectional |
| Dial Finish | Soleillée |
| Watch Case Back | Exhibition Case Back Screwed caseback |
| Crystal Shape | Domed |
| Glass Quality | Hardlex |
| Watch Case Types | Big Date (double aperture) |
| Buttons | 1 Crown |
| Water Resistance (in ATM) | 10 |
| Frequency | 21,600 A/h (3 Hz) |
| Movements | Automatic (rotor) |
| Movement Type | Japanese Movement |
| Movement Brand | Seiko Corp. |
| Calibers (Movements) | Seiko 4R36 |
| Calendar and Time | Dates Days Hours Minutes Seconds |
| Power Reserve (Maximum Duration) | 41 Hours |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Indices and railroad track Lumibrite Hands Lumibrite Indices |
| Bracelet Material | Nylon |
| Strap Color | Brown |
| Topstitching | Yes |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 20,00 |
The Seiko 5 watch is a versatile and robust timepiece built around a stainless steel case - prized for its durability and timeless appeal. With a diameter of 41 mm and a thickness of 13.20 mm, it showcases a classic round case shape, combining a captivating brushed and polished aesthetic. The bi-directional bezel is a smart feature, enabling quick and easy adjustment whether you're navigating or tracking elapsed time. The transparent screw-down case back reinforces the watch's robustness while revealing the intricate movement inside - a true showcase of Japanese watchmaking expertise.
The dial of this watch, in a rich brown tone, is a study in clarity and elegance. The sunray finish catches the light, producing dynamic, ever-changing visual effects. Arabic numerals, hands, and Lumibrite indices are artfully arranged around the dial, their sharp contrast ensuring effortless readability. A minute track marks every second with added precision. At 3 o'clock, the dual window offers a clear read of both day and date - a well-thought-out feature for everyday use.
Powering this watch is a Japanese automatic movement, the Seiko 4R36 caliber. Beating at 21,600 vph (3 Hz), this movement stands out for its stability and reliability. It delivers precise display of hours, minutes, seconds, along with date and day indications. Its power reserve is excellent, offering an autonomy of 41 hours.
The watch's brown nylon strap reflects a modern design while delivering optimal comfort for daily wear. Flexible and resilient, it conforms to the wrist and is accented with contrast stitching for a touch of sophistication. The lug width is 20 mm, providing ideal stability on the wrist. The pin buckle completes the dynamic, functional look of this piece, reinforcing its sporty and contemporary character.
With a water resistance of 10 ATM, this watch is built to handle a wide range of aquatic conditions. This rating ensures the watch reliably withstands water pressure down to 100 m depth.



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Seiko 5 HDB009K1 Watch
(Ref. 127228)