Seiko 5 Sports Field Series GMT 39.4mm HDB002K

The Seiko 5 Sports Field Series GMT HDB002K takes the most useful complication in travel watchmaking and drops it into a case that disappears on the wrist. The stainless steel case measures 39.4mm across, 13.6mm thick and just 47.9mm lug to lug — compact, honest field-watch proportions with drilled lugs and a 20mm strap width. A fixed steel bezel engraved with a 24-hour scale rings a warm ivory dial, where high-contrast Arabic numerals carry both 12- and 24-hour markings and a bold orange-red GMT hand cuts across the whole thing as a single point of focus.

LumiBrite-coated hands and markers hold their charge for genuine low-light legibility, a date sits at three o'clock, and a curved Hardlex crystal gives the dial a subtle vintage bow. The five-link stainless steel bracelet closes on a one-push three-fold clasp with a double-lock, and the automatic movement is visible through a see-through screw-down caseback.

Inside is Seiko's in-house Calibre 4R34, an automatic GMT movement with manual winding and hacking seconds, running at 21,600 vibrations per hour with a power reserve of approximately 41 hours. This is the point worth understanding: Seiko has designed and built its own movements since 1881, and the 4R34 is a genuine caller-style GMT — a mechanical dual-time complication in a watch positioned at the entry point of the automatic market, where GMTs almost never appear.

The HDB002K is water resistant to 100 metres and magnetically resistant, so it handles swimming, rain and daily wear without a thought. It's a men's automatic GMT watch built for someone who actually travels — a small, tough, dual-time steel watch that works with a suit, a t-shirt or a boarding pass.

What we love about this watch: The HDB002K solves a problem most watch brands ignore — that a proper mechanical GMT usually means either a big wrist or a big budget. At 39.4mm and 47.9mm lug to lug with an in-house automatic GMT calibre and 100m water resistance, this one asks for neither. The ivory dial is the quiet star of it, warm enough to read as neo-vintage against the orange-red GMT hand without ever looking like a costume. This is Seiko doing what Seiko does better than anyone: engineering that punches far above its price and then refusing to make a fuss about it.

• How and when will my StarBuy order be shipped?
  We ship all orders via Australia Post Express for fast and reliable delivery. We aim to dispatch every order as quickly as possible—typically within 1–3 business days. You'll receive a confirmation email with tracking details as soon as your order ships.
  

• Can StarBuy guarantee delivery dates?
  While Australia Post Express is generally reliable, their delivery dates are estimates only and may vary, especially during busy periods. We appreciate your understanding if your parcel takes a little longer to arrive.
  

• Will I need to sign for my order?
  Yes, a signature is required upon delivery. If no one is home, we recommend using a work address. Australia Post may offer contactless delivery—in those cases, we follow their current safety protocols. Risk and ownership transfer to the recipient upon delivery.
  

• What if I am not home when my order arrives?
  If no one is available to sign, Australia Post will leave a card with details on how to collect your parcel from the closest authorised Australia Post Office. You’ll need to present a photo ID at the post office to pick it up. If you’ve authorised a Safe Drop with Australia Post previously, they’ll follow your existing instructions.
  

• Will I get a Shipping Notification?
  Absolutely! As soon as your order is on its way, you’ll receive an email with tracking details. We kindly ask for your patience—tracking updates may take up to 3 business days after ordering.
  

• What are your shipping charges?
  We offer free shipping Australia-wide with Australia Post Express. For approved brands shipped to New Zealand, a $10 flat fee will be added to your total at checkout. Approved parcels to NZ are shipped within the Australia Post / NZ Post network.
  

• Click & Collect?
  

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  Pickup Location:
  StarBuy
  Suite 23, 112 McEvoy Street
  Alexandria NSW 2015 

  Hours:
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  Saturday: 9am–12pm  

  How it works - Your order will be ready for pickup within an hour during business hours (unless otherwise notified). If someone else is collecting on your behalf, just email us their name—they’ll need to show ID at pickup.

• Are all items in stock?

  StarBuy products for sale on the website are always live and accurate. All items marked ‘In Stock’ are physically in stock with us. Items marked ‘Out of Stock’ are completely sold out. In rare instances where additional items are ordered and the items are being shipped to StarBuy, a specific note will be made on the product page.
  
  

• How can I be sure your products are authentic?

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  1. Are brand new
  2. Are 100% genuine - manufactured by the named brands, in keeping with their high quality standards.

  The only thing that’s different are the low prices.
  
  

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• Why are StarBuy prices low?

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