Seiko 5 Sports Field Series GMT 39.4mm SSK025K
4 interest free payments of $168.75
The Seiko 5 Sports Field Series Mechanical GMT SSK025K is a modern expression of Seiko’s long‑standing heritage of durability, reliability, and purposeful design. Inspired by traditional military “trench watches”, the Seiko 5 Sports Field collection was created for life “in the field,” where toughness, legibility, and dependable performance matter most.
The SSK025K ‘Deception’ Field GMT elevates the classic field watch concept with enhanced functionality, featuring a bold black dial and black 24‑hour bezel paired with a highly visible orange GMT hand for tracking a second time zone at a glance. Designed for international travel and everyday practicality, the GMT function allows quick and intuitive multi‑time‑zone reading without compromising the watch’s clean, military‑inspired aesthetic. Staying true to the original field watch proportions, the 39.4mm stainless steel case with hard coating maintains a perfectly balanced, wear‑anywhere profile, while the curved Hardlex crystal adds durability and clarity. A black calfskin leather strap reinforces the rugged yet understated character of the watch, offering comfort and versatility from daily wear to outdoor use.
At the heart of this Seiko field watch is the trusted Seiko Calibre 4R34 automatic movement, delivering a 41‑hour power reserve and the mechanical reliability Seiko is renowned for. LumiBrite‑coated hands and indexes ensure excellent readability in low‑light conditions, while features such as 10‑bar water resistance, a screw‑down exhibition case back, stop‑seconds function, and strong magnetic resistance highlight the watch’s practical tool‑watch credentials. As with every model in the Seiko 5 Sports family, this watch proudly upholds the five core principles that define the collection: automatic movement, day‑date functionality, water resistance, a recessed crown, and a durable case construction.
What we love about the Seiko 5 Sports Field SSK025K is its perfect balance of heritage and modern functionality. It captures the honest, no‑nonsense spirit of a traditional field watch while adding a genuinely useful GMT complication. Compact, robust, and unmistakably Seiko, it’s a watch built to be worn daily, trusted in any environment, and appreciated for its understated character and mechanical integrity.
Orders are dispatched within 1–3 business days from Sydney via Australia Post Express for fast and reliable delivery. Customers located in Sydney may also enjoy the convenience of same‑day Click & Collect, with orders ready for pickup from our Alexandria showroom just one hour after purchase when this option is selected at checkout.
Every watch is covered by a 3‑year Seiko Australia warranty, providing complete peace of mind. StarBuy is an Authorised Seiko Distributor, and all watches are supplied in genuine Seiko original packaging. Warranties are registered online directly with Seiko, and following dispatch, Seiko will email you confirmation of your warranty registration along with a link to the online instruction manual. In line with Seiko’s current sustainability practices, printed warranty booklets and manuals are no longer supplied.
Specification
Case
- Case Diameter (mm) 39mm
- Case Thickness (mm) 13.6mm
- Lug-to-Lug (mm) 47.9mm
- Lug Width (mm) 20mm
- Case Material Stainless Steel
- Case Shape Round
- Case Back Type See Through Case Back
- Glass Type Hardlex
- Water Resistance (m) 100
- Bezel Material Stainless Steel
- Bezel Type Fixed Bezel
Bracelet / Strap
- Material Leather
- Type Strap
- Interchangeable? Yes
- Clasp Pin Clasp
- Clasp Type Tang Clasp
Dial
- Colour Black
- Calendar Date
- Finish Textured Matte Dial
- Indices Type Numerals
Delivery
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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?
Prefer a quicker pick-up? Our Click & Collect service makes it easy.
Pickup Location:
StarBuy
Suite 23, 112 McEvoy Street
Alexandria NSW 2015Hours:
Monday–Friday: 10am–5pm
Saturday: 9am–12pmHow 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.
FAQ
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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.
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How can I be sure your products are authentic?
We guarantee that all of the products we sell on StarBuy- Are brand new
- Are 100% genuine - manufactured by the named brands, in keeping with their high quality standards.
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Is a tax invoice included with my order?
All orders have an automated invoice emailed to the email address on the order. All items listed on our website are GST inclusive. The invoice clearly shows the GST charged on the purchase as well as our name and ABN number.
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Can an item be reserved or put on hold?
Unfortunately due to the model adopted by StarBuy, we are unable to reserve or put an item on hold. Items on sale are limited in quantity and often sell out quickly.
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Why are StarBuy prices low?
StarBuy is a low cost discount website that buys items in bulk and offers them at the lowest possible prices. We keep our costs low by automating most back office processes to keep our prices world competitive. We ensure that you benefit by buying quality brands at low prices from StarBuy and come back to save money again and again.
Choose options
4 interest free payments of $168.75
Specifications
- Case Diameter (mm) 39mm
- Case Thickness (mm) 13.6mm
- Lug-to-Lug (mm) 47.9mm
- Lug Width (mm) 20mm
- Case Material Stainless Steel
- Case Shape Round
- Case Back Type See Through Case Back
- Glass Type Hardlex
- Water Resistance (m) 100
- Bezel Material Stainless Steel
- Bezel Type Fixed Bezel
- Material Leather
- Type Strap
- Interchangeable? Yes
- Clasp Pin Clasp
- Clasp Type Tang Clasp
- Colour Black
- Calendar Date
- Finish Textured Matte Dial
- Indices Type Numerals
- Type Automatic
- In House? Seiko In House Movement
- Calibre 4R34
- Beat Rate (vph) 21600 vph
- Jewels 24
- Movement Hacking? Yes
- Hand Winding? Yes
- Self Winding? Yes
- Power Reserve (days) 1.71 days
- Accuracy +45 to -35 Seconds per Day
- Reference SSK025K
- GTIN 4954628251848
- Display Analog
- Gender Male
- Age Group Adults
- Weight (g) 79g (Approximate)
- Shipping Period 1-3 Business Days - Sydney
- Brand Seiko
- Authorised Dealer Yes
- Warranty Period Seiko 3 Year
- Warranty Registration Online by Starbuy
- Warranty Provider Seiko Watches Australia
- Packaging Seiko Original Packaging
- Manual Seiko Online
- Service Centre Seiko - Sydney
Reviews
Need help?
Frequently Asked Questions
What is the difference between the Seiko SSK025K and the SSK023K?
The SSK025K and SSK023K are the same watch in two finishes. Both use Seiko's automatic calibre 4R34 GMT, the same 39.4mm × 13.6mm case, Hardlex crystal, 100m water resistance and the same $675 RRP. The SSK025K has a black-coated stainless steel case on a black leather strap and weighs 79g; the SSK023K has a natural silver steel case on a steel bracelet and weighs 147g. Choose on wrist presence and weight — the SSK025K wears almost half as heavy and reads as a stealthier, more tactical watch, while the SSK023K is the more traditional and more versatile of the two.
Will the black coating on the Seiko SSK025K wear off?
Coated cases do show wear over time, particularly on the sharp edges of the lugs, the case flanks and the crown, where contact with desks, doorframes and belt buckles is most frequent. This is normal for any coated watch and not a fault — many owners consider the resulting patina part of the appeal on a field watch. Coatings cannot be spot-repaired; if the finish matters to you long-term, the uncoated SSK023K is the better choice. Everyday care is simple: avoid abrasive cleaners and rinse the case with fresh water after exposure to salt or sweat.
Can you fit a different strap to the Seiko SSK025K?
Yes. The SSK025K has a 20mm lug width, which is one of the most widely stocked sizes available, so almost any 20mm strap will fit — NATO, rubber, canvas, or a steel bracelet if you want to convert it toward the SSK023K look. The lugs use standard spring bars rather than a proprietary fitting. On a black-coated case, black or olive NATO and grey canvas are the natural pairings.