SEIKO 5 SPORTS HDB008K1 FIELD AUTOMATIC MEN WATCH

Seiko 5 Sports HDB008K1 — Field Series Automatic Watch

The Seiko 5 Sports HDB008K1 is the khaki green variant of the Field Series — and the most militarily coded dial in the four-model Field Series family. Khaki green has defined military and field watch aesthetics for over a century, and on the HDB008K1 it connects the watch's compass bezel, nylon/leather hybrid strap, and outdoor-focused specification to that design lineage directly. Where the HDB009K1's brown dial reads as earthy and warm, the HDB008K1's khaki green reads as tactical and terrain-ready. The Field Series specification is otherwise identical: the same 4R36 calibre, 41mm compass-bezelled case, Lumibrite on the bezel as well as the hands and indexes, and the nylon/leather strap that gives every Field Series model its authentic field watch character.

Powered by the 4R36 automatic calibre with manual winding, stop seconds, and a day-date display, the HDB008K1 delivers dependable everyday performance at 41 hours of power reserve. Lumibrite on the hands, indexes, and rotating bezel ensures full legibility in low light — the compass function is readable in the dark, making it genuinely useful in field conditions at night. Magnetic resistance to 4,800 A/m adds protection in environments with electromagnetic interference. At 41mm and 13.2mm slim with a screw and see-through caseback, the Field Series wears with the compact, practical presence that defines the best field watches.

Key Features

• Seiko 4R36 automatic movement with manual winding and stop seconds — self-winding with hand-winding convenience
• Approx. 41-hour power reserve — dependable everyday performance
• Day/Date display — full calendar function for outdoor and everyday use
• Khaki green earth-tone dial with Lumibrite numerals — militarily coded outdoor colourway with full low-light legibility
• Lumibrite on hands, indexes, AND bezel — complete low-light legibility including the compass reference marks
• Rotating bezel with compass function — practical navigation reference for field use
• Nylon and leather hybrid strap — authentic field watch aesthetic with rugged durability
• Curved Hardlex crystal — reliable scratch resistance for active outdoor use
• 41mm stainless steel case — field watch proportions at 13.2mm slim profile
• See-through and screw caseback — movement visible, secure seal maintained
• Magnetic resistance 4,800 A/m — protection in high-magnetic and outdoor environments
• 10 bar / 100M water resistance — ready for rain, streams, and outdoor water exposure

Why You'll Love It

The HDB008K1 is the Field Series for those who want the khaki green — the colour that defines military field watch heritage and sits most naturally in terrain environments. Khaki green on a compass-bezelled field watch is a visual statement of intent: this watch knows what it is and where it is going. The nylon/leather hybrid strap reinforces that character, the Lumibrite compass bezel makes it genuinely useful in low light, and the 4R36 calibre's 41-hour reserve handles multi-day outdoor use. The most tactically aesthetic of the Field Series four, and the most immediately context-specific.

HDB008K1 vs HDB009K1 — Khaki Green or Brown?

Both models are identical in every specification — same 4R36 calibre, 41mm case, compass bezel, Lumibrite on hands/indexes/bezel, nylon/leather hybrid strap, curved Hardlex, day-date, magnetic resistance, and 100M water resistance. The difference is solely the dial colour. The HDB008K1 has a khaki green dial — the most militarily coded and terrain-specific of the two, connecting directly to military field watch heritage. The HDB009K1 has a brown dial — the warmer, more versatile, and more everyday-wearable of the two. Same Field Series specification, two completely different visual characters.

About Seiko 5 Sports

Seiko 5 Sports is Seiko's most accessible line of automatic watches — a collection that has been making mechanical watchmaking available to active wearers for over fifty years. The "5" in Seiko 5 Sports refers to the five attributes the line has always carried: automatic winding, water resistance, a day-date display, a durable case and bracelet, and a see-through caseback. The Field Series adds a compass and a design language built for land rather than water.

The Seiko 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. Since then, Seiko has grown into one of the world's few truly vertically integrated watch manufacturers — designing, developing, and producing its own movements, cases, and crystals in Japan. The HDB008K1 carries that tradition of practical, accessible Japanese watchmaking forward in the most tactically resolved expression of the Seiko 5 Sports Field Series.

Backed by Seiko's official warranty. Authentic Seiko 5 Sports watch, sold by authorised retailer City Chain Singapore.

Also available: brown dial — HDB009K1. Explore the full Seiko 5 Sports Collection or browse all Seiko watches at City Chain Singapore.