Side by side
Praesidus Neptune 44vsSeiko 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
15 of 29 specs differDiameter
Neptune 4444mm
Astron GPS Solar 2025 Limited Edition42mm
Power Reserve
Neptune 4440h
Astron GPS Solar 2025 Limited Edition40h
Water Resistance
Neptune 44200m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Neptune 44$550
Astron GPS Solar 2025 Limited Edition$2,600
Full specifications
Case
7 specsCategory
Diver
GMT
Diameter
44mm
42mm
Thickness
—
12mm
Lug-to-Lug
—
47.9mm
Lug Width
22mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
200m
100m
Crystal & Dial
4 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Super-clear coating
Dial Color
Patina
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 9039
3X62
Type
Automatic
Quartz
Jewels
25
10
Pricing
1 specsMSRP
$550
$2,600
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