Side by side
Gruppo Gamma Vanguard Steel DatevsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Vanguard Steel Date42mm
Prospex Sea43.8mm
Power Reserve
Vanguard Steel Date42h
Prospex Sea41h
Water Resistance
Vanguard Steel Date100m
Prospex Sea200m
MSRP
Vanguard Steel Date$790
Prospex Sea$625
Full specifications
Case
5 specsCategory
—
Diver
Diameter
42mm
43.8mm
Thickness
12.6mm
12.8mm
Lug-to-Lug
49.5mm
48.7mm
Water Resistance
100m
200m
Crystal & Dial
3 specsAR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
Forged Carbon
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel
Movement
4 specsCaliber
Miyota 9015
4R35
Power Reserve
42h
41h
Jewels
25
23
Complications
Date
None
Pricing
1 specsMSRP
$790
$625
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