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
15 of 29 specs differDiameter
Vanguard Steel Date42mm
Prospex Sea41mm
Power Reserve
Vanguard Steel Date42h
Prospex Sea70h
Water Resistance
Vanguard Steel Date100m
Prospex Sea200m
MSRP
Vanguard Steel Date$790
Prospex Sea$900
Full specifications
Case
6 specsCategory
—
Diver
Diameter
42mm
41mm
Thickness
12.6mm
12.3mm
Lug-to-Lug
49.5mm
46.9mm
Lug Width
22mm
20mm
Water Resistance
100m
200m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR 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
6R35
Power Reserve
42h
70h
Jewels
25
24
Complications
Date
None
Pricing
1 specsMSRP
$790
$900
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