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Seiko Prospex SPEEDTIMER MechanicalvsTimefactors PRS-57

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
PRS-57
TimefactorsPRS-57
MSRP $1,268
Buy from Seiko ↗
Buy used on eBay ↗
Buy from Timefactors ↗
Buy used on eBay ↗

At a glance

13 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
PRS-5740mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
PRS-5762h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
PRS-57100m
MSRP
Prospex SPEEDTIMER Mechanical$995
PRS-57$1,268

Full specifications

Case

5 specs
Category
Chronograph
—
Diameter
39.5mm
40mm
Thickness
12mm
15mm
Lug-to-Lug
44.5mm
46mm
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
—
Lume
LumiBrite on hands and index(es)
SuperLuminova X1-C3

Movement

3 specs
Caliber
6R55
Sellita SW510
Power Reserve
72h
62h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$1,268
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