Seiko 5 Sports Khaki green Dial Men 41mm HDB008K1

Engineered for rugged outdoor exploration, military-inspired utility, and everyday mechanical reliability, the Seiko 5 Sports Field 41mm HDB008K1 delivers an authoritative field watch built for demanding adventures. Forged in a substantial 41.00 mm surgical-grade 316L stainless steel case measuring 13.20 mm in thickness with a 48.50 mm lug-to-lug span, this timepiece features an ergonomic brushed finish complemented by a functional bidirectional rotating compass bezel. The dial showcases an earth-toned khaki green textured surface optimized for high legibility, illuminated by Arabic numeral indices, bold syringe-style hands, and high-intensity Seiko LumiBrite paint across the dial markers, hands, and bezel orientation pip. Accented by an integrated dual day-of-the-week and numeric date calendar aperture at 3 o'clock beneath a curved scratch-resistant Hardlex crystal, it is powered by Seiko's in-house Calibre 4R36 automatic mechanical movement featuring hacking seconds, hand-winding capability, and a 41-hour power reserve visible through an exhibition screw-down case back. Mounted on a tough, reinforced 20 mm khaki green nylon webbing strap secured by a specialized three-fold clasp with push-button safety release, it is pressure-tested for 100 metres (10 bar / 10 ATM) of water resistance and protected by an official 3-year manufacturer warranty.

Key Highlights

• In-House Seiko Calibre 4R36 Automatic: Reliable 24-jewel Japanese mechanical movement featuring manual winding, automatic bi-directional rotor winding, and a 41-hour power reserve.

• Second-Hand Hacking Utility: Integrated stop-second mechanism enabling precise synchronization to official time signals during field navigation.

• Bidirectional Rotating Compass Bezel: Navigational bezel ring calibrated with cardinal and ordinal orientation markings (N, E, S, W) to calculate direction using the sun and hour hand.

• Tactical Khaki Green Earth-Tone Dial: Textured military-inspired dial face engineered to eliminate glare in harsh outdoor sunlight.

• High-Intensity Seiko LumiBrite Phosphor: Proprietary non-radioactive luminous paint applied generously across all Arabic numerals, indices, handset, and compass indicator for night visibility.

• Ergonomic 41.00mm Case Proportions: Engineered with a 48.50 mm lug-to-lug span and curved lug horns to sit securely and comfortably on varied wrist sizes.

• Curved Scratch-Resistant Hardlex Crystal: Seiko’s specially formulated mineral glass compound offering superior thermal resistance, clarity, and impact durability.

• Exhibition Screw-Down Case Back: See-through mineral glass display case back revealing the mechanical escapement, balance wheel, and decorated rotor.

• Dual Day & Date Calendar Window: Practical day-and-date complication positioned at 3 o'clock with bilingual display options for daily utility.

• Durable Khaki Green Nylon Webbing Strap: Resilient tactical strap designed for breathability, lightweight all-day comfort, and fast drying in wet conditions.

• Three-Fold Clasp with Push-Button Release: Secure metal deployant clasp mechanism keeping the tactical strap firmly anchored to the wrist during rigorous outdoor activity.

• Robust 100-Metre Water Resistance: Pressure rated for 10 bar (100 m / 330 ft), making it fully suitable for swimming, snorkeling, water sports, and harsh downpours.