Side by side

Gruppo Gamma Vanguard SteelvsSpinnaker Dumas Automatic

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

Vanguard Steel
Gruppo GammaVanguard Steel
MSRP $790
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239

At a glance

12 of 29 specs differ
Diameter
Vanguard Steel42mm
Dumas Automatic44mm
Power Reserve
Vanguard Steel42h
Dumas Automatic40h
Water Resistance
Vanguard Steel100m
Dumas Automatic300m
MSRP
Vanguard Steel$790
Dumas Automatic$239

Full specifications

Case

6 specs
Category
Diver
Diameter
42mm
44mm
Thickness
12.6mm
15mm
Lug-to-Lug
49.5mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Forged Carbon
Blue
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Miyota 9039
SII NH35A
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$790
$239

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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.

Spinnaker Dumas Automatic

Owners widely praise the Spinnaker Dumas Automatic for its attractive textured blue dial, applied indices, and well-finished case, noting its comfortable wearability due to a short lug-to-lug distance. Some owners flag the use of mineral crystal instead of sapphire and a bracelet with a learning curve and loose keeper. Overall, owners rate the Spinnaker Dumas Automatic highly for its aesthetics and case finishing at its price point.

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