SEIKO 5 Sports Field GMT HDB001K1 - Green Dial Automatic Men's Watch

The Seiko 5 Sports HDB001K1 is part of the Field series, drawing inspiration from traditional military field watches and reworking that rugged aesthetic into a refined, everyday sports piece. Its glossy green dial keeps the tough character of a field watch while feeling equally at home in the city. A standout feature of this reference is its built-in GMT function, letting you track a second time zone via the fixed 24-hour bezel and orange 24-hour hand, a practical touch for frequent travelers or anyone coordinating across time zones.

At the heart of the watch is Seiko's in-house Caliber 4R34, an automatic movement with manual winding capability, delivering approximately 41 hours of power reserve and running on 24 jewels. The 39.4mm stainless steel case is compact and well-balanced, with a 47.9mm lug-to-lug measurement and 13.6mm thickness that keeps it comfortable and versatile on the wrist. A curved Hardlex crystal protects the dial, while LumiBrite luminous material on the hands and indexes ensures strong legibility in low light. A date window at 3 o'clock adds everyday practicality.

The watch is finished with a solid stainless steel bracelet secured by a three-fold clasp with push-button release and secure lock, fastened at 205mm in length with 20mm lug width. It's rated to 10 bar (100m) water resistance and 4,800 A/m magnetic resistance, making it durable enough for daily wear and light water exposure. A see-through screw case back shows off the automatic movement inside.

Key Specifications:

• Caliber: 4R34 (Automatic with manual winding)
• Power Reserve: Approx. 41 hours
• Jewels: 24
• Functions: 24-hour GMT hand (dual time display), stop-second hand, date display
• Case Material: Stainless steel
• Case Size: 39.4mm diameter, 13.6mm thick, 47.9mm lug-to-lug
• Crystal: Curved Hardlex
• Luminous Material: LumiBrite (hands and indexes)
• Bracelet: Stainless steel, three-fold clasp with push-button release, 205mm length, 20mm lug width
• Water Resistance: 10 bar (100m)
• Magnetic Resistance: 4,800 A/m
• Weight: 147.0g
• Case Back: See-through, screw-down
• Series: 5 Sports Field series

What's in the box
1 x Watch