SpecStudio
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Seiko Prospex SPEEDTIMER Mechanical
$995Stock unknown
Case
- Diameter
- 39.5mm
- Thickness
- 12mm
- Lug-to-lug
- 44.5mm
- Lug width
- 20mm
- Material
- Stainless Steel
- Water resistance
- 200m
Crystal & dial
- Crystal
- Sapphire
- Shape
- Curved
- AR coating
- Anti-reflective coating on inner surface
- Lume
- LumiBrite on hands and index(es)
Movement
- Caliber
- Seiko 6R55
- Type
- Automatic
- Power reserve
- 72h
- Jewels
- 24
Design language
- Case shape
- round
- Dial style
- matte
- Bezel
- fixed
- Bracelet
- lug-attached
- Hands
- baton
AI-detected from the product image
Prospex SPEEDTIMER collection · 11 watches
2 colorways
The market
Market prices.
Retail$995
The forum market
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Active listings3Across watch forums
Closed · 30d5Asking-price history
Browse forum listings and their asking prices. Market+ adds medians with their sample sizes and the weekly trend.
Retail stock & market context
Seiko on the secondhand market
+8.1%
2026 so far · +3.6% to +12.6% · 79 matched watches
In line with the index
Chronographs as a group: +5.6% · 136 matched watches
Year-by-year readings →The connection engine
More like this.
The community take
Owners talk.
The Seiko Prospex SPEEDTIMER Mechanical is praised for its visually appealing design and comfortable wearability, with owners frequently using its chronograph function for daily tasks. Reviewers note its clean dial layout and LumiBrite treated hands and markers, and one source highlights the 72-hour power reserve of the 6R55 movement. However, some owners criticize its chronograph functionality and the 24-hour subdial. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER Mechanical highly for its daily usability and refined aesthetics.
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On real wrists
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The paper trail
Cross-shops
Popular comparisons.
The matchups people make with the Seiko Prospex SPEEDTIMER Mechanical most: open one to see it side by side.
The discussion