Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsGruppo Gamma Vanguard Steel

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

OSAR-D (Original SAR with Date) Automatic 41mm
MarathonOSAR-D (Original SAR with Date) Automatic 41mm
MSRP $1,800
Vanguard Steel
Gruppo GammaVanguard Steel
MSRP $790

At a glance

13 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 41mm41mm
Vanguard Steel42mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 41mm40h
Vanguard Steel42h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 41mm300m
Vanguard Steel100m
MSRP
OSAR-D (Original SAR with Date) Automatic 41mm$1,800
Vanguard Steel$790

Full specifications

Case

7 specs
Category
Diver
Diameter
41mm
42mm
Thickness
13mm
12.6mm
Lug-to-Lug
43.5mm
49.5mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

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

Movement

2 specs
Caliber
Sellita SW220-1
Miyota 9039
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$1,800
$790

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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.

Marathon OSAR-D (Original SAR with Date) Automatic 41mm

The Marathon OSAR-D (Original SAR with Date) Automatic 41mm is noted for its highly legible white dial with applied hour markers and a functional date magnifier, emphasizing its tool-watch purpose. Its Swiss-made Sellita SW200-1 movement is considered reliable and serviceable. One reviewer found the bracelet lacked refinement and preferred the rubber strap option. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 41mm for its excellent legibility and robust movement.

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.

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