SEIKO PRESAGE SPB471J1 CLASSIC AUTOMATIC OPEN HEART MEN WATCH

Seiko Presage SPB471J1 — Classic Series 'Sumi-iro' Open Heart Watch

The Seiko Presage SPB471J1 is the 'Sumi-iro' — a Classic Series open heart watch whose name, design, and material choices form a unified Japanese cultural brief. 'Sumi-iro' (墨色) means ink black in Japanese, and the dial references the rich, deep tone of traditional sumi ink used in Japanese calligraphy and painting. The dial texture is inspired by soft Japanese silk — a material that has featured in Japanese history since ancient times — with a surface designed to maximise light reflections in the way that woven silk catches light across its weave. Under the dual-curved sapphire glass, curved hands and indices evoke vintage style while the recessed open-heart aperture at 9 o'clock exposes the 6R5J movement at work, and the recessed 24-hour subdial at 6 o'clock provides secondary time zone reference — two features that together fill the Sumi-iro's clean black dial with visual depth and mechanical interest.

Powered by the 6R5J automatic calibre with hand-winding, stop seconds, and a 72-hour power reserve, the SPB471J1 delivers +25/-15 seconds per day in a 40.2mm super-hard coated stainless steel case. The dual-curved sapphire crystal with anti-reflective coating on the inner surface keeps the ink-black dial clear and deep at every angle. The seven-piece multi-row stainless bracelet draws directly from 1970s retro metal bracelet design — each link is only 6mm long to allow maximum movement and comfort, and the polished surfaces catch and release light with the same dynamic quality as the dial. At 13.0mm slim, 46.0mm lug-to-lug, and 139.0g, it wears with the substantial but comfortable character of a well-resolved bracelet watch.

Key Features

• Seiko 6R5J automatic movement with manual winding and stop seconds — in-house mechanical performance visible through the open heart
• Approx. 72-hour (3-day) power reserve — reliable performance through a long weekend without wearing
• Accuracy: +25/-15 seconds per day (5°C–35°C) — precise automatic timekeeping
• Open-heart aperture at 9 o'clock — the 6R5J movement visible through the dial
• Recessed 24-hour subdial at 6 o'clock — secondary time zone reference within the clean dial layout
• Sumi-iro ink-black dial with silk-inspired texture — designed to maximise light reflections across the surface
• Baton dial markers — clean, formally resolved presentation
• Lumibrite: N/A — dial character preserved without lume markings
• No date display — Calendar: N/A — uninterrupted dial composition
• Dual-curved sapphire crystal with anti-reflective coating on inner surface — premium clarity and scratch resistance
• See-through screw caseback — additional view of the 6R5J calibre at work
• 40.2mm stainless steel case with super-hard coating — 13.0mm slim / 46.0mm lug-to-lug / 139.0g
• Seven-piece multi-row stainless bracelet — 1970s retro bracelet design, 6mm links for maximum wrist movement and comfort
• Magnetic resistance 4,800 A/m — everyday environmental protection
• 100M water resistance — everyday practical protection

Why You'll Love It

The SPB471J1 is the Presage Classic for those who want the mechanical visual — the open heart — in the most design-coherent and culturally specific expression the Classic Series offers. The Sumi-iro brief is exact: ink black, silk texture, light reflections, curved hands. Every element of the dial is in service of the same Japanese material culture reference, and the open heart at 9 o'clock and 24-hour subdial at 6 add two levels of mechanical and functional depth to a dial that would be compelling even without them. The 1970s retro multi-row bracelet brings a further design reference — the polished link surfaces create a light-catching quality at the wrist that mirrors the silk-inspired dial above it. A watch with a specific, well-told brief that delivers on every level.

About Seiko Presage Classic Series

The Presage Classic Series represents Seiko Presage at its most formally focused — Japanese mechanical watchmaking expressed with restraint, precision, and cultural specificity. The Sumi-iro is the Classic Series at its most narratively resolved: the dial, the texture, the name, and the bracelet are all expressions of the same Japanese cultural tradition, brought together in a watch that rewards extended looking.

The Seiko Presage Story

The story begins in 1881, when Kintaro Hattori founded a clock and watch shop in Ginza, Tokyo — the business that would become the Seiko of today. Seiko Presage was created to carry Seiko's finest Japanese craft traditions into the watch dial: enamel, urushi lacquer, arita porcelain, cocktail-inspired artistry, and — in the Sumi-iro — the ink tones and silk textures of Japanese material culture. The SPB471J1 carries that tradition forward in the Classic Series' most culturally layered expression.

Backed by Seiko's official warranty. Authentic Seiko Presage watch, sold by authorised retailer City Chain Singapore.

Explore the full Seiko Presage Collection or browse all Seiko watches at City Chain Singapore.