Side by side

Gruppo Gamma Vanguard SteelvsYema Navygraf CMM.10

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

Vanguard Steel
Gruppo GammaVanguard Steel
MSRP $790
Navygraf CMM.10
YemaNavygraf CMM.10
MSRP $1,899

At a glance

13 of 29 specs differ
Diameter
Vanguard Steel42mm
Navygraf CMM.1039mm
Power Reserve
Vanguard Steel42h
Navygraf CMM.1040h
Water Resistance
Vanguard Steel100m
Navygraf CMM.10100m
MSRP
Vanguard Steel$790
Navygraf CMM.10$1,899

Full specifications

Case

6 specs
Category
Diver
Diameter
42mm
39mm
Thickness
12.6mm
11mm
Lug-to-Lug
49.5mm
46mm
Lug Width
22mm
19mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Forged Carbon
Standard
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Miyota 9039
Yema CMM.10
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$790
$1,899

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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.

Yema Navygraf CMM.10

Owners widely report quality control concerns and suspect craftsmanship with the Yema Navygraf, with one user noting crooked text. A reviewer praised the Slim CMM.20 Limited Edition for its stylish, slim profile and classy finishing on a black lacquered enamel dial, though the audible micro-rotor spinning at its price point was a surprise. On balance, the consensus is that while the Yema Navygraf offers a stylish design, potential buyers should be aware of reported quality control issues.

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