Side by side
Gruppo Gamma Vanguard Steel DatevsSeiko Prospex Sea The Black Series
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 Sea The Black Series45mm
Power Reserve
Vanguard Steel Date42h
Prospex Sea The Black Series41h
Water Resistance
Vanguard Steel Date100m
Prospex Sea The Black Series200m
MSRP
Vanguard Steel Date$790
Prospex Sea The Black Series$765
Full specifications
Case
5 specsCategory
—
Diver
Diameter
42mm
45mm
Thickness
12.6mm
13.2mm
Lug-to-Lug
49.5mm
47.7mm
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
Seiko 4R36
Power Reserve
42h
41h
Jewels
25
24
Complications
Date
None
Pricing
1 specsMSRP
$790
$765
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