Side by side

Marathon Arctic OSAR 41mm AutomaticvsMassena LAB Uni-Racer

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

Arctic OSAR 41mm Automatic
MarathonArctic OSAR 41mm Automatic
MSRP $1,800
Uni-Racer
Massena LABUni-Racer
MSRP $3,495

At a glance

15 of 29 specs differ
Diameter
Arctic OSAR 41mm Automatic41mm
Uni-Racer39mm
Power Reserve
Arctic OSAR 41mm Automatic40h
Uni-Racer58h
Water Resistance
Arctic OSAR 41mm Automatic300m
Uni-Racer50m
MSRP
Arctic OSAR 41mm Automatic$1,800
Uni-Racer$3,495

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
41mm
39mm
Thickness
13mm
9mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
Acrylic
Crystal Shape
Flat
Domed
AR Coating
Inner
No

Movement

4 specs
Caliber
Sellita SW220-1
SW510 BH M Elaboré
Type
Automatic
Manual
Power Reserve
40h
58h
Jewels
25
23

Pricing

1 specs
MSRP
$1,800
$3,495

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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 Arctic OSAR 41mm Automatic

The Marathon Arctic OSAR 41mm Automatic is noted for its comfortable wearability on wrists under 7 inches, with one owner finding the 41mm size perfect. Accuracy observations vary, with one owner reporting a consistent +1 second per day and another noting -20 seconds per day. The watch features a Sellita automatic movement and has dimensions of 14mm thickness and a 48mm lug-to-lug. Overall, owners appreciate the Marathon Arctic OSAR 41mm Automatic for its comfortable fit and Marathon's overall appeal.

Massena LAB Uni-Racer

The Massena LAB Uni-Racer is praised for its refined vintage chronograph aesthetic, featuring a 39mm case with unique horizontal finishing, a GPHG-nominated hand-wound Sellita SW510 M movement, and a sector dial with a "big eye" counter. Owners and reviewers highlight its period-perfect Super-LumiNova and snailing on recessed registers, all supported by a 58-hour power reserve and 50m water resistance. On balance, owners and reviewers rate the Massena LAB Uni-Racer highly for its authentic vintage design and refined execution at its price point.

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