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• 39.4 mm stainless steel case
• Green sandblasted dial, luminous hands and a contrasting GMT hand
• Seiko Caliber 4R34 automatic movement with manual winding and approximately 41 hours of power reserve
• Curved Hardlex crystal and 10 BAR / 100-meter water resistance
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Seiko 5 Sports Field GMT HDB001K1 combines field-watch styling with practical dual-time functionality. Its green sandblasted dial features embossed Arabic numerals and a subtle grainy texture, giving the watch a distinctive outdoor-inspired appearance. The contrasting GMT hand allows the wearer to track a second time zone, making it useful for travel and everyday activities. Inside, the Seiko Caliber 4R34 automatic movement offers approximately 41 hours of power reserve and supports manual winding. A stainless steel case and bracelet provide a coordinated finish, while the curved Hardlex crystal and transparent screw case back complete the design. With 100-meter water resistance, this model balances everyday practicality with mechanical watchmaking.
Brand: Seiko
Gender: Men
Brand Origin: Japan
Series: Seiko 5 Sports Field
Additional Information: Automatic GMT Watch
Model: HDB001K1
Movement: Mechanical Automatic with Manual Winding
Movement Source: Seiko
Power Reserve: Approximately 41 hours
Precision: +45 to −35 seconds per day
Features: GMT, Dual-Time Display, Date Display, LumiBrite, See-through Case Back
Engine: Seiko Caliber 4R34
Jewels: 24
Caliber No: 4R34
Case Size: 39.4 mm
Lug-to-lug: 47.9 mm
Case Thickness: 13.6 mm
Band Width: 20 mm
Band Type: Stainless Steel Bracelet
Dial Color: Green
Case Color: Silver
Band Color: Silver
Water Resistance: 10 ATM / 100 meters
Functions: Hours, Minutes, Seconds, GMT / Dual Time
Calender: Date
Watch Style: Field, Sport, GMT, Casual
Weight: 147 g
Case Back: See-through Screw Case Back
Case Shape: Round
Clasp: Three-fold Clasp with Push-button Release and Secure Lock
Crystal: Curved Hardlex
LumiBrite: On Hands and Indexes
Known By: HDB001K1
Seiko 5 Sports Field series takes inspiration from traditional field watches, emphasizing legibility, durability and everyday versatility. The HDB001K1 adds GMT functionality to this practical design, allowing the wearer to track a second time zone. Its sandblasted green dial, embossed Arabic numerals and LumiBrite details enhance readability, while the stainless steel bracelet gives it a versatile sporty appearance. The automatic movement and robust water resistance make it suitable for everyday wear and travel.
Movement: Mechanical Automatic with Manual Winding
Caliber: Seiko 4R34
Power Reserve: Approximately 41 hours
Jewels: 24
Accuracy: +45 to −35 seconds per day
Functions: 24-hour GMT Hand, Dual-Time Display, Date Display
Additional Feature: Stop-seconds Function
