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Seiko King Seiko KSK
$3,300Stock unknown
Case
- Diameter
- 38.6mm
- Thickness
- 10.7mm
- Lug-to-lug
- 45.8mm
- Lug width
- 19mm
- Material
- Stainless Steel
- Water resistance
- 50m
Crystal & dial
- Crystal
- Sapphire
- Shape
- Box
- AR coating
- Anti-reflective coating on inner surface
Movement
- Caliber
- Seiko 6L35
- Type
- Automatic
- Power reserve
- 45h
- Jewels
- 26
Seiko
A slim Seiko in-house automatic, notably thinner than the common 6R family, running at 28,800 vph with around 45 hours of power reserve. Used in higher-end Seiko models (including certain Presage and Prospex pieces) and also supplied to some other brands.
Design language
- Case shape
- round
- Dial style
- sunburst
- Bezel
- fixed
- Bracelet
- lug-attached
- Hands
- dauphine
AI-detected from the product image
King Seiko KSK collection · 3 watches
5 colorways
Size
The market
Market prices.
Retail$3,300
The forum market
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Active listings0Across watch forums
Closed · 90d1Asking-price history
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Retail stock & market context
Seiko on the secondhand market
+7.9%
2026 so far · +3.5% to +12.7% · 75 matched watches
In line with the index
Dress watches as a group: +9.2% · 191 matched watches
Year-by-year readings →The connection engine
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The community take
Owners talk.
Owners and reviewers widely praise the King Seiko KSK for its exceptional dial and case finishing, often compared to higher-end brands, and its slim, retro design. The use of the Calibre 6L35 movement in some variants is seen as a significant upgrade, contributing to a refined feel, while others note the bracelet is unusually nice and the case offers a mix of brushed and polished finishes with sharp angles. However, some owners question the value proposition, citing misaligned screws and clasp components on their examples, and the standard 6R movement in some models is criticized as a disappointment for the price point. Accuracy figures range from +15/-10 seconds per day to +5 to +7 seconds per day, and water resistance is rated at 5 BAR or 50 meters. Overall, owners and reviewers find the King Seiko KSK to be a beautiful and classy watch with fantastic finishing, though some are divided on its value and movement choice at its price point.
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The discussion