Seiko5 SSK003K1 Men's New Sports Automatic Watch

The Seiko 5 Sports SSK003K1 is a dynamic automatic GMT watch that reimagines the classic SKX heritage with modern functionality and sporty style. Boasting a rich blue dial paired with a bi-colour 24-hour rotating bezel, this timepiece is designed for travellers and everyday wearers alike. Powered by Seiko’s proven Caliber 4R34 automatic movement with manual winding capability, it delivers dependable performance with a power reserve of around 41 hours.

The independent GMT hand and rotating GMT bezel make tracking a second time zone effortless, while LumiBrite-coated hands and markers ensure excellent visibility in all lighting conditions. Built with a robust stainless steel case and bracelet, and finished with a durable Hardlex crystal, the SSK003K1 is as reliable as it is stylish.

Whether you’re crossing time zones or going about your daily routine, this Seiko 5 Sports GMT delivers enduring performance and versatile appeal.

• Automatic movement with manual winding (Seiko Caliber 4R34)
  
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  Approx. 41 hours power reserve
  
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  GMT function with independent 24-hour hand for dual time tracking
  
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  Blue dial with luminous hands and markers
  
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  Bi-colour 24-hour rotating bezel for day/night indication
  
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  Stainless steel case and bracelet with secure three-fold clasp
  
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  Hardlex crystal for durability
  
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  10 bar / 100 m water resistance — suitable for swimming
  
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  See-through screw case back
  
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  Stop-seconds hand function for precise time setting
  

Brand: Seiko

Model: SSK003K1

Collection: Seiko 5 Sports GMT

Movement Type: Automatic with manual winding

Caliber Number: 4R34

Jewels: 24

Power Reserve: Approx. 41 Hours

Functions: Hours, Minutes, Seconds, Date, GMT (24-hour hand), Stop-Seconds

Case Material: Stainless Steel

Case Diameter: 42.5 mm

Case Thickness: 13.6 mm

Lug-to-Lug: 46.0 mm

Lug Width: 22 mm

Crystal: Hardlex

Dial Colour: Blue

Lume: LumiBrite on Hands & Indexes

Bracelet Material: Stainless Steel

Clasp Type: Three-Fold Clasp with Push-Button Lock

Water Resistance: 100 m / 10 bar

Magnetic Resistance: 4,800 A/m

Gender: Men’s

Watch Style: Sports / GMT / Everyday

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1. Is the Seiko 5 SSK003K1 an original Seiko watch?

Yes — this is a genuine automatic GMT timepiece from the Seiko 5 Sports collection.

2. Does this watch need a battery?

No — it uses an automatic movement that winds by wrist motion and supports manual winding.

3. What is the GMT function used for?

The GMT (24-hour) hand allows tracking of a second time zone, ideal for travel or global timekeeping.

4. What is the case size?

The case is 42.5 mm in diameter with a thickness of 13.6 mm, offering a balanced yet substantial presence.

5. Is this watch waterproof?

Yes — it has 100 m (10 bar) water resistance, suitable for swimming and daily water exposure.

6. Does it glow in the dark?

Yes — the hands and markers are coated with LumiBrite, providing excellent low-light visibility.

7. Can I see the movement?

Yes — the watch features a see-through screw case back that lets you view the automatic movement in action.