Knowledge Center

Professional Authentication Platform

Log InRegister

Seiko · 5 Sports

SKX / 5 Sports Diver Style

Ref. SKX007

Also written: SKX007J, SKX007K, SKX007J1, SKX007K1

discontinuedISO 6425 diver (7S26)DocumentedLast reviewed Not yet reviewed

Known Variants

Classification

FactoryDocumented as shipped from the factory for this reference and period.PeriodNot original to this watch, but correct for its production period.ServiceFitted by the manufacturer's own service network. Not a defect.AftermarketThird-party part. Affects originality, not authenticity.ModifiedGenuine parts in a configuration the factory did not sell. Affects originality and value, not authenticity.CounterfeitDeceptive reproduction intended to pass as genuine.UnknownEvidence on file does not settle the question.

Dial

Factory

J-market dial

Carries '21 JEWELS' beneath 'DIVER'S 200m' and 'Made in Japan' in small text at the foot of the dial. Supplied to the Japanese market as SKX007J.

Probable

Dial

Factory

K-market dial

Carries the movement code '7S26-' at the foot of the dial in place of the origin text, and omits the jewel count. Supplied to markets outside Japan as SKX007K.

Probable

Dial

Aftermarket

Aftermarket replacement dial

Sold openly by several manufacturers in every conceivable colour and layout. Not counterfeit — they are not usually passed off as Seiko parts — but a watch wearing one is no longer in its original configuration, and the change is often not disclosed on resale.

High confidence

Component compatibility

What this reference is documented to have carried, and in what capacity. A service part is the manufacturer's own work; only a counterfeit classification is a finding against the watch.

Documented calibers

  • Seiko 7S26FactoryDefault configurationHigh confidence

    1996–2019

  • Seiko 4R36AftermarketProbable

    Whole production

    A popular owner-fitted upgrade — dimensionally compatible, and it adds hacking and hand-winding. Not a Seiko service replacement for this reference and not a factory configuration; disclose it, and expect it on modified examples.

Components