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Seiko Prospex SPB087J1 – A Masterpiece of Dive Watch Engineering
The Seiko Prospex SPB087J1 is a testament to the brand’s dedication to precision, durability, and elegant design. Crafted in 2018 for the Fall/Winter collection, this automatic diver watch blends Japanese craftsmanship with robust materials to deliver an instrument that performs flawlessly under water and on land.
Case & Construction
The watch features a round stainless steel case finished in a striking silver (steel silver) color. With a thickness of 13 mm, the case maintains a substantial yet comfortable presence on the wrist. The durable Sapphire crystal glass protects the dial from scratches and impacts, ensuring long‑term clarity.
Dial & Display
The dial is a classic black (Zifferblattfarbe: Schwarz), providing high contrast against the silver case. It displays an analog time with hour and minute hands, while a dedicated date window at the 3 o’clock position offers quick reference to the day of the month.
Movement & Power Reserve
At its heart lies a Japanese automatic movement (Gehäuseform: Mechanisch Automatisch), specifically the 6R15 caliber. This self‑winding mechanism is powered by 23 rubies, which reduce friction and extend longevity. The watch boasts a generous power reserve of 50 hours, allowing it to run for more than two days on a full wind.
Water Resistance & Dive Features
The SPB087J1 is engineered for serious diving, with a water resistance rating of 20 bar (200 m). Its robust construction includes a push‑pin mounting system (Mount type: Pushpins), ensuring the crown and case back remain sealed under pressure. The watch’s design also incorporates a rotating bezel that can be used to track dive time.
Strap & Bracelet
The original silicone strap, identified as R028011J0, measures 20 mm in width (Larghezza cinturino / Strap width). Silicone offers excellent flexibility and resistance to saltwater, making it ideal for underwater use. The strap’s push‑pin attachment allows for quick replacement or customization.
Aesthetic & Functional Highlights
- Case Material: Stainless steel (silver finish)
- Crystal: Sapphire glass
- Dial Color: Black with date window
- Movement: Japanese automatic 6R15, 23 rubies
- Power Reserve: 50 hours
- Water Resistance: 20 bar (200 m)
- Case Thickness: 13 mm
- Strap Width: 20 mm, silicone material
Legacy and Heritage
The Seiko Prospex line has long been revered by professional divers and watch enthusiasts alike. The SPB087J1 continues this legacy by combining reliable mechanical performance with a design that is both functional and stylish. Its 2018 Fall/Winter release showcases the brand’s commitment to evolving technology while respecting traditional craftsmanship.
Conclusion
The Seiko Prospex SPB087J1 stands out as an exemplary dive watch, offering a harmonious blend of robust engineering, elegant aesthetics, and dependable performance. Whether you’re navigating the depths of the ocean or simply appreciating fine horology, this timepiece delivers excellence in every detail.
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International
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 662.60 EUR  877.70 EUR  888.00 EUR  662.60 EUR  662.60 EUR  662.60 EUR |
| Colors
Predominant colors of the product |
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| Identifiers | |
| Brand |  The Seiko brand is a Japanese watchmaker that was founded in 1881. The company is known for its high-quality watches, and it has a large following among watch enthusiasts. Some of the brand's most popular models include the Seiko SKX007 and the Seiko SARB035. |
| MPN | Seiko SPB087J1 |
| ID | 25461747 |
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| Key Features | |
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Calendar The format or style of the calendar displayed by the product, such as "Date – Window", "Date – Digital", "Date – Dial" or other descriptive variants. It indicates how dates and time information are presented to the user on the device’s display or app.
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Date - Window |
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Case color Represents the visual tone or hue that characterizes the outer shell or enclosure of a product, such as a watch, phone case, or protective cover. The value is typically a single color name (e.g., "Silver", "Black", "Rose Gold") and may also include combinations separated by commas for multi‑tone finishes.
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Silver |
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Date The type of display used on a watch face, indicating whether the time is shown on a traditional analog dial, a digital screen, or a windowed display that combines elements of both. This attribute helps users quickly identify the visual style and functionality of the watch’s interface.
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Window |
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Dial colour The visual hue or finish of a watch’s dial face, expressed as a single colour name such as "Black", "Silver" or "Blue". It indicates the primary appearance of the time‑piece’s display area and helps users identify models by their dial style.
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Black |
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Frequency The operating frequency of a device or component, expressed in hertz (Hz). It represents the number of cycles per second that the product’s internal circuits or wireless radios can run and is useful for comparing performance across similar products.
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21600 |
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Material The material indicates the type of substance from which a product is made, such as metal, plastic, wood, glass, or composite materials. It helps users understand the product’s durability, weight, appearance, and suitability for specific applications.
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Steel silver |
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Mechanism The type of mechanical or electronic system that drives a product’s timekeeping or motion function, such as quartz, automatic, manual, digital, or hybrid. It indicates whether the movement is powered by a battery, mainspring, or other energy source and helps users compare performance, maintenance needs, and typical accuracy.
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Mechanic Automatic |
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Mount type The type of mechanical attachment used to secure the product, such as pushpins, steel rods, screws, or other mounting hardware. It indicates how the item is intended to be mounted on a surface or frame and helps users determine compatibility with their installation setup.
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Pushpins |
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Original strap The materials that make up a watch or bracelet strap, such as leather, metal, silicone, textile or composite blends. Multiple materials may be listed when a strap is composed of more than one component.
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R028011J0 |
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Power reserve The amount of time a device can operate on its internal power source before needing recharging or replacement, expressed in hours. This value indicates the battery life or power reserve available to the user and helps compare endurance across similar products.
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50 |
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Strap width The horizontal measurement of a strap, expressed in a linear unit such as millimetres or inches. It indicates how wide the strap is from one side to the other and is used for sizing, fitting, and compatibility purposes with watches, bags, belts, and similar accessories.
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20 mm |
| Time | hours - Analogue hand |
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