Side by side

Gruppo Gamma Vanguard SteelvsGrand Seiko SLGA015

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Vanguard Steel
Gruppo GammaVanguard Steel
MSRP $790
SLGA015
Grand SeikoSLGA015
MSRP $12,600
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Gruppo Gamma Vanguard Steel

The Gruppo Gamma Vanguard Steel is praised for its aged steel case and cream sandwich dial. However, some owners dislike the distorted sapphire crystal and the absence of minute markers, with one noting difficulty in replacing the crystal due to hand fitment. The watch features a Miyota 9039 movement with a 42-hour power reserve and an accuracy range of -10 to +30 seconds per day, and is offered with two strap options. On balance, owners value the Gruppo Gamma Vanguard Steel for its distinctive aged aesthetic and dial design, despite some reservations about the crystal.

From video reviewers

Movement accuracy is a notable strength, with one reviewer noting a -1.8 second per day deviation after initial testing. A weakness is the substantial price hike for the re-release model, which raises questions about whether the upgrades justify the cost. Reviewers disagree on the watch's originality, with one calling it "decidedly derivative" and the other not mentioning this aspect.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

At a glance

13 of 29 specs differ
Diameter
Vanguard Steel42mm
SLGA01543.8mm
Power Reserve
Vanguard Steel42h
SLGA015120h
Water Resistance
Vanguard Steel100m
SLGA015200m
MSRP
Vanguard Steel$790
SLGA015$12,600

Full specifications

Case

7 specs
Category
Diver
Diameter
42mm
43.8mm
Thickness
12.6mm
13.8mm
Lug-to-Lug
49.5mm
51.5mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
100m
200m

Crystal & Dial

2 specs
Dial Color
Forged Carbon
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Miyota 9039
9RA5
Type
Automatic
Spring Drive
Power Reserve
42h
120h

Pricing

1 specs
MSRP
$790
$12,600
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