SEIKO 5 SPORTS SSK025K1 FIELD DECEPTION MECHANICAL GMT MEN WATCH

Seiko SSK025K1 — 5 Sports Field Street Style GMT Automatic

The Seiko SSK025K1 is the all-black, leather-strap variant of the 39.4 mm Field GMT platform — sharing the same 4R34 automatic GMT calibre, the same compact 39.4 mm case, the same curved Hardlex crystal, the same Arabic numeral markers, the same LumiBrite, the same date, and the same 100 m water resistance as the SSK023K1, but in a hard-coated black stainless steel case on a black leather strap instead of a natural silver case on a steel bracelet. The result is a stealth-mode field GMT — every element is black, from the case to the strap to the dial, creating a monochromatic tactical look that the silver-cased SSK023K1 cannot replicate.

Key Features

• Seiko 4R34 automatic GMT calibre — approx. 41-hour power reserve, hand-winding capability, see-through case back
• GMT function — 24-hour hand tracks a second timezone simultaneously
• Black dial with Arabic numeral markers — military/field-watch legibility in the most readable marker style
• Date display — practical daily utility
• 39.4 mm stainless steel case with hard coating — all-black finish for a stealth, tactical aesthetic
• Curved Hardlex crystal — Seiko's proprietary hardened mineral glass with a gentle curve
• No rotating bezel — clean, field-watch case profile
• LumiBrite on hands and hour markers — full low-light and field legibility, with high contrast against the black dial
• 10 bar (100 metres) water resistance — genuine swim-ready capability
• Black leather strap — lighter on the wrist than a bracelet, completing the all-black theme

Why You'll Love It

The SSK025K1 is the GMT for the buyer who wants everything black. The hard-coated case, black dial, and black leather strap create a fully monochromatic package — no silver accents, no colour pops, just an all-black field GMT that disappears onto the wrist and lets the LumiBrite markers do the talking in low light. The leather strap makes it lighter and more comfortable than the bracelet-equipped SSK023K1, and the lower price reflects the strap vs bracelet difference. Same 4R34 GMT calibre, same 39.4 mm compact case, same 100 m WR — the same field GMT in stealth mode.

SSK025K1 vs SSK023K1

Both share the same 4R34 GMT calibre, same 39.4 mm case, same curved Hardlex, same Arabic numerals, same LumiBrite, same date, and same 100 m water resistance. The SSK025K1 has a hard-coated black case with a black leather strap — the stealth, all-black option at a lower price. The SSK023K1 has a silver case with a stainless steel bracelet — the classic field-watch metal option. Same GMT, two material personalities.

The Seiko Story

Since 1881, when Kintaro Hattori founded a clock and watch shop in Ginza, Tokyo, Seiko has been at the forefront of timekeeping innovation — from the world's first quartz wristwatch in 1969 to today's GPS Solar and Spring Drive technologies. The Seiko 5 Sports Field collection draws from military field-watch heritage — robust, readable, unpretentious. The SSK025K1 takes that philosophy to its logical extreme: everything black, everything legible, GMT utility in stealth mode.

Backed by Seiko's official warranty. Authentic Seiko 5 Sports, sold by authorised retailer City Chain Singapore.

Explore more Seiko 5 Sports, browse the full Seiko collection, or see all Men's watches at City Chain Singapore.

Extra $15 OFF with min. $200 spend
Use Code: FORYOU15

Extra $30 OFF with min. $400 spend
Use Code: FORYOU30

Calibre Type: Automatic - Powered By The Movement Of The Wearer
Calibre Number: 4R34
Calibre Function: Analogue - 3 Hands G.M.T
Power Reserve: Approx. 41 Hours
Display: Analogue

Case Material: Stainless Steel (hard coating)
Case Color: Black
Case Diameter: 39.4mm
Water Resistance: 100 Metres
Glass: Curved Hardlex
Crown: Pull Out
Rotating Bezel: N/A

Dial Color: Black
Dial Markers: Arabic Numerals
Hand Indicators: Hour, Minute, Seconds, 24-Hour
Calendar Indicators: Date
Lumibrite: Hands & Hour Markers

Band/Bracelet: Strap - Leather
Band Color: Black

Hand Winding: Yes
Dual Time Capability: Yes
See-through Case Back: Yes

Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)

• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)

Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.

For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.