Side by side
Seiko Prospex SPEEDTIMER MechanicalvsStraton Straton Syncro MKII Mechanical Chrono
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
18 of 29 specs differDiameter
Prospex SPEEDTIMER Mechanical39.5mm
Straton Syncro MKII Mechanical Chrono40mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
Straton Syncro MKII Mechanical Chrono—
Water Resistance
Prospex SPEEDTIMER Mechanical200m
Straton Syncro MKII Mechanical Chrono100m
MSRP
Prospex SPEEDTIMER Mechanical$995
Straton Syncro MKII Mechanical Chrono$599
Full specifications
Case
7 specsDiameter
39.5mm
40mm
Thickness
12mm
12.4mm
Lug-to-Lug
44.5mm
48mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
—
Water Resistance
200m
100m
Caseback
Solid
Sapphire crystal
Crystal & Dial
5 specsCrystal Shape
Curved
Domed
AR Coating
Anti-reflective coating on inner surface
Underside
Dial Color
Black
—
Indices
Applied
—
Lume
LumiBrite on hands and index(es)
None
Movement
5 specsCaliber
6R55
Seagull ST19
Type
Automatic
Manual
Beat Rate
28,800 vph
0 vph
Power Reserve
72h
0h
Jewels
24
0
Pricing
1 specsMSRP
$995
$599
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