Side by side
Seiko AstronvsStraton 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
Astron44.1mm
Straton Syncro MKII Mechanical Chrono40mm
Power Reserve
Astron40h
Straton Syncro MKII Mechanical Chrono—
Water Resistance
Astron100m
Straton Syncro MKII Mechanical Chrono100m
MSRP
Astron$3,100
Straton Syncro MKII Mechanical Chrono$599
Full specifications
Case
7 specsDiameter
44.1mm
40mm
Thickness
14.4mm
12.4mm
Lug-to-Lug
50mm
48mm
Lug Width
14mm
20mm
Material
Titanium
316L Stainless Steel
Finish
Brushed and polished
—
Caseback
Solid
Sapphire crystal
Crystal & Dial
5 specsCrystal Shape
Curved
Domed
AR Coating
Super-clear coating
Underside
Dial Color
Black
—
Indices
Applied
—
Lume
LumiBrite on hands and index(es)
None
Movement
5 specsCaliber
5X83
Seagull ST19
Type
Quartz
Manual
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
0h
Jewels
14
0
Pricing
1 specsMSRP
$3,100
$599
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