King Seiko SPB387 — Charcoal Black
The rebirth of a legend. The King Seiko SPB387 revisits one of Seiko’s most iconic mid-century designs — the KSK of 1965 — reinterpreted for the modern collector with elevated finishing, precision, and poise.
Movement
Powered by the Caliber 6R55, this automatic movement offers a power reserve of approximately 72 hours and supports manual winding. With 24 jewels and a precision range of +25 to -15 seconds per day, it combines traditional mechanical reliability with contemporary performance. A stop-seconds function allows for exact time setting.
Case & Design
Faithful to the original KSK’s sharp-edged architecture, the 38.3mm stainless-steel case captures the bold faceted lines and mirror-polished surfaces that defined King Seiko’s identity. Measuring just 11.7mm thick and 46mm lug-to-lug, it wears elegantly while maintaining a solid wrist presence.
The charcoal black dial adds understated depth, contrasting beautifully against the crisp metallic case and razor-edged hands.
Crystal & Details
A box-shaped sapphire crystal with anti-reflective coating on the inner surface ensures distortion-free visibility. LumiBrite on the hands offers subtle nighttime legibility without disturbing the dial’s vintage character.
Bracelet & Comfort
Secured by a stainless-steel bracelet with a deployment clasp and push-button release, the watch weighs a comfortable 139 grams. Quick-release spring bars make strap changes effortless for those who prefer a more personal touch.
Specifications
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Movement: Automatic with manual winding, Caliber 6R55
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Power Reserve: ~72 hours (3 days)
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Case Size: 38.3mm diameter × 11.7mm thickness × 46mm lug-to-lug
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Material: Stainless steel
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Water Resistance: 10 bar (100 meters)
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Crystal: Box-shaped sapphire, inner AR coating
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Lug Width: 19mm
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Weight: 139g
A modern King, born from 1965’s finest.
The King Seiko SPB387 stands as a symbol of Japanese precision and timeless design — a refined mechanical classic that bridges Seiko’s heritage and its enduring pursuit of excellence.
