Side by side
Seiko Astron GPS Solar 2025 Limited EditionvsVaer D4 Outerknown Solar Diver
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Astron GPS Solar 2025 Limited Edition43.4mm
D4 Outerknown Solar Diver39mm
Power Reserve
Astron GPS Solar 2025 Limited Edition40h
D4 Outerknown Solar Diver40h
Water Resistance
Astron GPS Solar 2025 Limited Edition100m
D4 Outerknown Solar Diver200m
MSRP
Astron GPS Solar 2025 Limited Edition$2,900
D4 Outerknown Solar Diver$549
Full specifications
Case
7 specsCategory
Chronograph
Diver
Diameter
43.4mm
39mm
Thickness
13.4mm
13.18mm
Lug-to-Lug
49.5mm
46mm
Lug Width
14mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
100m
200m
Crystal & Dial
5 specsCrystal
Sapphire
Domed Sapphire
Crystal Shape
Curved
Flat
AR Coating
Super-clear coating
Inner
Dial Color
Black
Blue
Lume
LumiBrite on hands and index(es)
None
Movement
2 specsCaliber
5X83
—
Jewels
14
25
Pricing
1 specsMSRP
$2,900
$549
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