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Home/Browse/Seiko/Prospex SPEEDTIMER Mechanical
Seiko Prospex SPEEDTIMER Mechanical
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Seiko Prospex SPEEDTIMER Mechanical

Chronograph

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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2 Variants
Lume:LumiBrite on hands and index(es)
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Retail MSRP
$995
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Alternatives
Case
39.5mm
Power Reserve
72h
Movement
Automatic
Water Resistance
200m
Crystal
Sapphire + AR
01

Case Dimensions

Diameter39.5mm
Thickness12mm
Lug-to-Lug44.5mm
Lug Width20mm
02

Case Build

MaterialStainless Steel
Water Resistance200m
03

Crystal & Dial

CrystalSapphire
ShapeCurved
AR CoatingAnti-reflective coating on inner surface
LumeLumiBrite on hands and index(es)
04

Movement

Caliber
6R55
TypeAutomatic
Beat Rate—
Power Reserve72 hours
Jewels24
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleMatte
BezelFixed
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026
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