Side by side
Seiko Astron GPS Solar 2025 Limited EditionvsStraton 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
Astron GPS Solar 2025 Limited Edition43.4mm
Straton Syncro MKII Mechanical Chrono40mm
Power Reserve
Astron GPS Solar 2025 Limited Edition40h
Straton Syncro MKII Mechanical Chrono—
Water Resistance
Astron GPS Solar 2025 Limited Edition100m
Straton Syncro MKII Mechanical Chrono100m
MSRP
Astron GPS Solar 2025 Limited Edition$2,900
Straton Syncro MKII Mechanical Chrono$599
Full specifications
Case
7 specsDiameter
43.4mm
40mm
Thickness
13.4mm
12.4mm
Lug-to-Lug
49.5mm
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
$2,900
$599
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