Channeling the utilitarian aesthetic of archival mid-century military field instruments and modern mechanical reliability, the Seiko 5 Sports Field 39.4mm SRPG39K1 delivers purposeful tactical styling in an adaptable everyday silhouette. Built in a robust 39.40 mm surgical-grade 316L stainless steel case, this field-ready timepiece features an evocative sapphire-blue textured dial accented by warm gold-toned Arabic numerals, an inner 24-hour military chapter ring, and a central seconds hand tipped with a high-contrast orange arrow. Protected by a vintage-domed curved Hardlex crystal and powered by the proven in-house Seiko Calibre 4R36 automatic movement with manual winding and second-hand hacking capabilities, it is paired with a supple black calfskin leather strap with white contrast stitching and rated for 100 metres of water resistance, making it an ideal companion for outdoor trails and urban daily wear.
Key Highlights
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In-House Seiko Calibre 4R36 Automatic Movement: Proven 24-jewel Japanese mechanical calibre beating at 21,600 vibrations per hour, offering a 41-hour power reserve, manual hand-winding, and second-hand hacking (stop-seconds).
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Rich Textured Sapphire Blue Dial: Deep, low-glare blue dial surface providing high contrast against warm gold-toned Arabic numerals and baton indices.
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Tactical Military Field Layout: Dual 12-hour and 24-hour military time scales paired with an orange-tipped seconds hand for quick navigational reading.
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Curved Hardlex Crystal: Specially domed toughened mineral crystal formulated to deliver enhanced impact resistance, scratch defense, and vintage optical warmth.
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Iconic Seiko 5 Heritage Attributes: Built around the five core pillars: automatic movement, unified day-date display, substantial water resistance, recessed crown protection, and durable steel construction.
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High-Intensity LumiBrite Visibility: Seiko LumiBrite applied across the hands and perimeter hour plots for instant legibility in pitch-black environments.
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Transparent Exhibition Case Back: See-through display back showcasing the decorated mechanical movement, oscillating winding rotor, and balance assembly.
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Supple Calfskin Leather Strap: Durable black cow leather strap accented with contrast white saddlery stitching and a stainless steel pin buckle.
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Robust 100-Metre Water Resistance: Pressure rated for 10 bar (100 m / 330 ft), making it fully protected for swimming, showers, and all-weather daily conditions.
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Official Seiko 3-Year Manufacturer Warranty: Fully covered nationwide and internationally under Seiko’s official brand guarantee.
Design & Craftsmanship
Archival Field Heritage & Sapphire Blue Canvas
The dial of reference SRPG39K1 draws directly from mid-century military navigation watches issued to infantry and aviation personnel. The deep sapphire-blue canvas is treated with a fine matte texture to prevent glare under bright daylight. Applied gold-toned Arabic numerals deliver warm vintage character, while an inner concentric 24-hour track allows for instant military time calculation. The slender sweep seconds hand features a vivid orange arrow tip that tracks fractions of a second with precision.
Ergonomic 39.4mm Architecture & Field Proportions
Engineered for active daily versatility, the 316L stainless steel case measures 39.40 mm in diameter, 13.20 mm in height, and a compact 48.10 mm from lug to lug. The case profile features satin-brushed surfaces across the top and sides to resist visible scratches and diffuse light reflections, complemented by a smooth fixed bezel. Weighing just 75 grams on the wrist, it delivers balanced, lightweight comfort throughout long days.
Mechanical Reliability: Calibre 4R36
Visible through the mineral exhibition case back, the watch runs entirely on kinetic energy captured by natural arm motion. The in-house Seiko Calibre 4R36 automatic movement provides approximately 41 hours of autonomous reserve. It includes hand-winding capability through the crown to kickstart the watch after periods of rest, as well as a hacking-seconds mechanism for precise time synchronization. The supple black calfskin leather strap features reinforced white stitching and a 20 mm lug width for easy strap customization.
5 Reasons why you should buy watches from Zimson – Since 1948 , Celebrating 75 years
- Zimson is the authorised retailer for Seiko in India
- Zimson deals and sells only authentic watches and all the watches will be furnished with an invoice , brand warranty and brand packaging .
- Zimson is in the business of watch retailing since 1948
- Zimson has a strong after-sales service back up with state of art watch servicing facilities
- Zimson has gained the trust of over million customers throughout these years from our online www.zimsonwatches.com and offline stores present in Bangalore , Chennai , Kochi , Coimbatore , Salem , Madurai , Trichy and Pondicherry .
5 Frequently asked questions from our shoppers:
Are the watches sold at Zimsonwatches.com authentic ?
Ans: Yes , all the watches sold online at zimsonwatches.com and offline stores are 100% authentic and genuine .
Will the warranty be active if I buy online ?
Ans: Yes , all the watches come with brand warranty which can be from 1 yr to 7 years , depending on the brand which is ordered .
How soon can I get my watch once order placed ?
Ans: Once the order is confirmed , order will be processed within 24 hours and despatched within 48 hours and should reach the respective location in 2-3 working days from the time of despatch .
Which courier partner will be used to send the watch ?
Ans: Bluedart , DTDC Plus , Shiprocket .
Can I place order online and collect offline ?
Ans: Yes! One can place the order online and collect his or her watch offline at the desired store , prior information needs to be given so we can facilitate this .
