SEIKO PROSPEX SPB507J1 ALPINIST AUTOMATIC MEN WATCH

Seiko Prospex SPB507J1 — Alpinist Automatic

The Seiko Prospex SPB507J1 is the purest expression of one of Seiko's most enduring and beloved designs — the Alpinist, a watch originally created in 1959 for Japan's "Yama-otoko," the mountain men who climbed in the Japanese Alps before modern outdoor equipment existed. The signature pine green dial with cathedral-style hands and Arabic numerals is one of the most instantly recognisable and historically significant dial designs in Seiko's history — a combination that has remained essentially unchanged since 1959 because it has never needed to change.

The SPB507J1 brings that heritage firmly into the present with the in-house 6R55 automatic calibre — a 72-hour power reserve movement with hand-winding capability — housed in a super-hard coated stainless steel case under curved sapphire crystal. The exhibition caseback reveals the 6R55 in action, engraved with the mountain device emblem that connects every modern Alpinist to the spirit of the 1959 original. At 39.5mm with a stainless steel bracelet and 200M water resistance, it wears as comfortably in a meeting room as it does on a mountain trail.

Key Features

• Seiko 6R55 automatic movement with manual winding — self-winding with the convenience of hand-winding when needed
• Approx. 72-hour (3-day) power reserve — reliable performance through a long weekend without wearing
• Accuracy: +25/-15 seconds per day — dependable automatic timekeeping
• Iconic pine green dial — the 1959 Alpinist signature colour, one of the most recognisable in Seiko's history
• Cathedral-style hands and Arabic numerals — faithful to the original 1959 Alpinist design
• Vintage Alpinist logo under the crystal — classic heritage branding connecting the modern watch to its 1959 origin
• Curved sapphire crystal — premium scratch resistance and superior optical clarity
• 39.5mm super-hard coated stainless steel case — enhanced durability with a refined, slim profile
• Exhibition caseback with mountain device emblem — admire the 6R55 movement and the collector's detail within
• Date display — everyday practicality built in
• Stainless steel bracelet — durable, comfortable, and corrosion-resistant
• 200M water resistance — built for serious outdoor use
• Made in Japan — Seiko's highest standard of in-house manufacture

Why You'll Love It

The SPB507J1 is the Seiko Prospex for the collector who understands what the pine green Alpinist dial represents — not a colour choice, but a sixty-five-year design legacy that connects the wearer directly to the mountain men of 1959. The cathedral hands and Arabic numerals are as readable as they are beautiful, the 6R55 with its 72-hour reserve handles any weekend without wearing, and the super-hard coated case keeps it looking pristine through whatever the outdoors demands. The mountain device emblem on the exhibition caseback is the kind of detail that rewards those who look closely — a collector's touch on a watch that is genuinely capable as well as genuinely beautiful. At 39.5mm it wears with a trim authority that larger modern watches rarely achieve. The definitive pine green Alpinist for the modern collector.

About the Seiko Alpinist

The Seiko Alpinist was born in 1959 — a watch designed for Japan's mountain climbers at a time when domestic watchmaking was finding its identity in extreme environments. The original Alpinist established the pine green dial, the cathedral hands, the Arabic numerals, and the compact case proportions that define every Alpinist to this day. Over sixty-five years the design has been refined and updated but never fundamentally altered — because the original solved the problem it was designed for with a precision and elegance that has never been improved upon. The SPB507J1 carries that lineage forward with Seiko's most advanced current automatic calibre and the best materials available, without disturbing a single detail of the design that made it iconic.

The Seiko Prospex Story

Prospex is a combination of the words "Professional" and "Specifications." Seiko Prospex timepieces are designed to be practical, reliable, and durable — built to meet the high standards required in extreme environments for sports lovers and adventure seekers alike. The Alpinist has been part of that story since before the Prospex name existed — a mountain watch that predates the dive watch, the field watch, and the GPS solar by decades, and remains as relevant today as it was when Japan's climbers first strapped it to their wrists in 1959.

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

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