WatchOtaku : Seiko 4S15

Intro

(Image credit: Legacy of Seikosha)

Specs

• Debut 1992
• Size: Unknown
• 25 jewels
• Automatic, bidirectional winding
• Rate: 28,800 vph
• Power reserve: Unknown
• Hacking
• Handwinding
• Hour, minute, central seconds, quickset date

Sources

• Good info at corporate history
• Review of the SUS watch with the 4s15
• Another SUS review

Related pages

• Blog:
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