Side by side
Sheffield Chrono IIvsSeiko Astron GPS Solar 2025 Limited Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Chrono II40mm
Astron GPS Solar 2025 Limited Edition43.4mm
Power Reserve
Chrono II—
Astron GPS Solar 2025 Limited Edition40h
Water Resistance
Chrono II100m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Chrono II—
Astron GPS Solar 2025 Limited Edition$2,900
Full specifications
Case
5 specsDiameter
40mm
43.4mm
Thickness
13mm
13.4mm
Lug-to-Lug
48mm
49.5mm
Lug Width
20mm
14mm
Material
Stainless Steel
Titanium
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Dial Color
Blue
Black
Lume
None
LumiBrite on hands and index(es)
Movement
4 specsCaliber
Seiko VK64
5X83
Type
Mecaquartz
Quartz
Power Reserve
—
40h
Jewels
25
14
Pricing
1 specsMSRP
—
$2,900
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