Side by side

Gruppo Gamma Vanguard SteelvsOrient Bambino Open Heart

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

Vanguard Steel
Gruppo GammaVanguard Steel
MSRP $790
Bambino Open Heart
OrientBambino Open Heart
MSRP $315

At a glance

18 of 29 specs differ
Diameter
Vanguard Steel42mm
Bambino Open Heart40.5mm
Power Reserve
Vanguard Steel42h
Bambino Open Heart40h
Water Resistance
Vanguard Steel100m
Bambino Open Heart30m
MSRP
Vanguard Steel$790
Bambino Open Heart$315

Full specifications

Case

7 specs
Category
Diameter
42mm
40.5mm
Thickness
12.6mm
12mm
Lug-to-Lug
49.5mm
46mm
Lug Width
22mm
21mm
Water Resistance
100m
30m
Caseback
Solid
Display

Crystal & Dial

6 specs
Crystal
Sapphire
Mineral
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Forged Carbon
White
Indices
Applied
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
Miyota 9039
FT622
Beat Rate
28,800 vph
21,600 vph
Power Reserve
42h
40h
Jewels
25
22

Pricing

1 specs
MSRP
$790
$315

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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.

Orient Bambino Open Heart

Owners widely praise the Orient Bambino Open Heart for its dressy style, clean dial, and reliable in-house F6724 automatic movement with hacking and hand-winding. Reviewers and owners highlight its value proposition, with one owner noting it remains a regular wear even after acquiring pricier watches. Some owners find the build quality and stock strap less premium, with one noting the mineral crystal is prone to scratching and another that the movement can be noisy. The 21mm lug width is cited as making strap swapping slightly more complicated. Overall, owners and reviewers rate the Orient Bambino Open Heart highly for its dressy aesthetic and in-house movement at its price point.

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