Seiko 5 Sports Field Series HDB009K1J

The Essence of Durability and Authentic Adventure

The SEIKO 5 Sports Field Series Automatic merges rugged military-inspired aesthetics with Seiko’s legendary long-term reliability. Crafted in the spirit of classic field watches, this timepiece delivers bold robust styling and versatile all-condition functionality, designed to perform steadily in daily life and outdoor adventures alike.

Powered by the trusted 4R36 automatic movement with manual winding capability and stop-second function, it ensures consistent precision and a smooth daily wearing experience. Equipped with high-intensity LumiBrite luminous coating on hands, indices and bezel, the dial maintains outstanding readability even in low-light and dark environments.

Built with a durable stainless steel case and a premium nylon strap, the watch features a sophisticated transparent screw-down case back that showcases the intricate mechanical movement. Boasting 10 bar water resistance and professional anti-magnetic performance, the Field Series balances everyday practicality and outdoor toughness.

More than a daily timepiece, the SEIKO 5 Sports Field Series Automatic embodies authentic mechanical charm, reliable precision, and timeless utilitarian aesthetics for wearers who pursue genuine style and dependable quality.

Product Specifications

Movement

- Caliber Number: 4R36
- Movement Type: Automatic with manual winding function
- Power Reserve: Approximately 41 hours
- Jewels: 24 jewels
- Core Functions: Stop-second hand function, day & date dual display

Case & Band

- Case Material: Stainless steel
- Case Dimensions:
- Thickness: 13.2 mm
- Diameter: 41.0 mm
- Lug-to-lug: 48.5 mm
- Crystal: Curved Hardlex crystal
- Luminous Performance: LumiBrite coating on hands, indices and rotating bezel
- Band Material: Nylon
- Lug Spacing: 20 mm

Performance & Key Features

- Water Resistance: 10 bar water resistance
- Magnetic Resistance: 4,800 A/m anti-magnetic performance
- Net Weight: 85.0 g
- Highlights:
- Functional rotating bezel
- Transparent screw-down case back