Description
Description
The SEIKO 5 SPORTS HDB009J is a Japan Made Field series mechanical watch with a brown dial and nylon strap. Designed with outdoor utility and everyday wearability in mind, it features a 41.0 mm stainless steel case, a bi-directional rotating compass-scale bezel, and strong LumiBrite visibility for practical field-watch character.
Powered by Caliber 4R36 Mechanical Automatic movement, the watch offers manual winding, stop-seconds functionality, day-date display, 24 jewels, and an approx. 41-hour power reserve. The day display supports both Japanese and English, adding useful daily convenience.
The brown dial changes nuance depending on the light, giving the watch a mature military-inspired look. A newly designed nylon strap with leather accents enhances durability and field style, while curved Hardlex, 10 bar water resistance, magnetic resistance, and a see-through screw case back support dependable everyday use.
Key Specifications
- Product Name: SEIKO 5 SPORTS Field series
- Model Code: HDB009J
- Case: 13.2 mm thickness × 41.0 mm diameter × 48.5 mm lug-to-lug, 85.0g, stainless steel
- Case Back: Stainless steel and glass, see-through screw back
- Bezel: Bi-directional rotating compass-scale bezel
- Band: Brown nylon strap with leather accents
- Wrist size: Up to 205.0 mm
- Band width: 20 mm
- Water resistance: 10 bar
- Movement: Caliber 4R36 Mechanical Automatic, manual winding compatible
- Jewels: 24 jewels
- Power: Automatic winding with manual winding; approx. 41-hour power reserve
- Accuracy: +45 to -35 seconds per day
- Display: Analog brown dial with day-date display
- Functions: Day display, date display, stop-seconds function, manual winding, bilingual day display in Japanese and English
- Special features: Field series design, rotating compass-scale bezel, see-through case back, screw case back, magnetic resistance
- Illumination: LumiBrite on hands, indexes, and bezel
- Glass: Curved Hardlex
- Origin: Japan Domestic Market (JDM), Made in Japan
- Warranty: 3-year official manufacturer warranty
- Release date: June 5, 2026
Key Highlights
The HDB009J stands out as a SEIKO 5 SPORTS Field series model with a practical bi-directional compass-scale bezel. Compared with standard field watches, it offers stronger outdoor character while remaining easy to wear daily.
Its Caliber 4R36 automatic movement provides reliable mechanical performance with manual winding, stop-seconds functionality, 24 jewels, and an approx. 41-hour power reserve. The bilingual day-date display adds useful everyday convenience.
On the wrist, the 41.0 mm case gives a balanced presence, while the brown dial and nylon strap create a warm, mature military-inspired style. LumiBrite, curved Hardlex, and 10 bar water resistance support practical use.
As a Japan Made JDM model, the HDB009J is a strong choice for buyers seeking a mechanical field watch with outdoor utility, daily reliability, and authentic SEIKO 5 SPORTS character.
Short Promo Line
SEIKO 5 SPORTS Field Series / Japan Made Automatic / Brown Nylon Field Watch