Side by side

Marathon Arctic OSAR 36mm AutomaticvsCWC Mellor-72 Mechanical Watch

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

Arctic OSAR 36mm Automatic
MarathonArctic OSAR 36mm Automatic
MSRP $1,200
Mellor-72 Mechanical Watch
CWCMellor-72 Mechanical Watch
MSRP $499

At a glance

13 of 29 specs differ
Diameter
Arctic OSAR 36mm Automatic36mm
Mellor-72 Mechanical Watch38mm
Power Reserve
Arctic OSAR 36mm Automatic40h
Mellor-72 Mechanical Watch40h
Water Resistance
Arctic OSAR 36mm Automatic300m
Mellor-72 Mechanical Watch50m
MSRP
Arctic OSAR 36mm Automatic$1,200
Mellor-72 Mechanical Watch$499

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
36mm
38mm
Thickness
13mm
12mm
Lug-to-Lug
43.5mm
42mm
Lug Width
18mm
18.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
Acrylic
Dial Color
White
CWC Mellor-72 Mechanical Watch
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Sellita SW220-1
Sellita SW210
Type
Automatic
Manual

Pricing

1 specs
MSRP
$1,200
$499

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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 36mm Automatic

The Marathon Arctic OSAR 36mm Automatic is noted for its non-tritium dial option, though some owners prefer the 1-12 numeral layout found on other models. One owner found the 36mm size too small for their wrist. Overall, owners appreciate the Marathon Arctic OSAR 36mm Automatic for its non-tritium dial option.

CWC Mellor-72 Mechanical Watch

The CWC Mellor-72 Mechanical Watch is widely praised for its authentic, utilitarian design and satisfying hand-wound Sellita SW210 movement, with owners noting a smooth winding action and excellent accuracy, including one report of zero seconds deviation over 24 hours. Reviewers highlight the era-appropriate dial and functional "piece of kit" appeal, though some find the 35mm case small by modern standards and legibility can be impacted by the domed hesalite crystal. Owners report issues with fixed lug bars being poorly filled in and fogging inside the crystal, while others state no water resistance problems. Overall, owners and reviewers appreciate the CWC Mellor-72 Mechanical Watch for its genuine military heritage and functional charm, despite some practical drawbacks.

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