Exclusively Limited New Full-Set Seiko 5 SSK043K1 “A.K.A Slamdunk Style” 42.5 mm GMT

Seiko 5 Sports GMT SSK043K1 – “Slamdunk of Style” Champagne Dial Edition – Brand New Full‑Set

This is the limited-edition “Slamdunk” Champagne Dial GMT variant from Seiko’s 5 Sports SKX-style GMT lineup — the SSK043K1. Released as a Asia exclusive (1,300 unit production), it combines rugged SKX roots with refined champagne sunburst and court-inspired aesthetics. Powered by Seiko’s 4R34 GMT movement. This watch is brand new, unworn, and ships with a full-set: original box, manual, tags, and warranty card included.

Get Noticed

The stunning champagne sunray dial blends with a mono‑color bezel and subtle details inspired by the energy of basketball, giving this limited-edition piece character and flair. In a robust 42.5 mm stainless steel case weighing ~161 g, backed by LumiBrite markers, this GMT adds personality without sacrificing utility.

60‑Day Defect Replacement Guarantee

Your watch should feel as flawless as it looks. If it arrives defective, or stops working within 60 days of delivery, we’ll replace it.

Specifications

Model: Seiko 5 Sports GMT SSK043K1 (“Slamdunk of Style” Champagne Dial)
Case Diameter: 42.5 mm
Lug‑to‑Lug: 46 mm
Case Thickness: 13.6 mm
Case Material: Stainless steel
Dial: Champagne sunburst with applied indices, magnified date, LumiBrite hands & markers
Bezel: Unidirectional rotating 24‑hour bezel (black/grey)
Movement: Seiko Caliber 4R34 automatic GMT (hacking & hand‑winding), 24 jewels
Power Reserve: ~41 hours
Crystal: Hardlex
Water Resistance: 100 m (10 bar)
Bracelet: Stainless steel stylized five‑row, 22 mm lug width, tri‑fold push‑button clasp with safety lock
Lume: LumiBrite hands and markers
Caseback: Exhibition-style screw-down back
Weight: ~161 g
Includes: Original Seiko box, warranty card, manual, and hang tags (Full‑Set)

Shipping & Handling

Ships within 1 business day of payment.
Insured and securely packaged.
No signature confirmation required.

Which SSK043 Are You Getting? (J1 vs. K1 Explained)

Seiko produces its GMT series in two official versions:

• SSK043J1 – Japan-made version: Assembled in Seiko’s Japanese facilities, often marked “Made in Japan” on the dial or caseback. These tend to command a premium due to their origin and collectibility.

• SSK043K1 – Export version: Assembled in Seiko-owned facilities outside Japan (commonly Malaysia). The K1 variant matches the J1 in movement, build quality, finishing, and design—but typically comes at a lower price.

Both versions share:

• The same Seiko 4R34 automatic GMT movement

• The same 42.5 mm SKX-inspired case

• The same stainless steel stylized bracelet

• The same champagne dial and exterior details

The only meaningful distinctions are:

• Assembly location (Japan vs. overseas)

• Minor dial or caseback text differences

• Pricing (J1 generally commands more)

Neither version is fake or inferior—both are fully authentic Seiko releases crafted to Seiko’s stringent standards.

This listing is for the brand-new, full-set SSK043K1 export version.

Buy with Confidence – Register Your New Seiko

I work directly with one of the largest and most reputable Seiko distributors in the business. 

1. Visit Seiko’s registration portal (official site).

2. Enter the model number (on the hang tag).

3. Enter your 6‑digit serial number (engraved on the caseback).

4. Enter your 8‑character caseback code (e.g. “4R34‑0AB0”).

5. Submit and receive confirmation email verifying registration.

Note: Seiko’s manufacturer warranty applies only to purchases made through authorized dealers. Grey‑market purchases are not covered under Seiko’s warranty—but all watches we sell are brand new, authentic, and protected by our 60‑day defect replacement guarantee.