Side by side

Marathon Arctic OSAR 46mm AutomaticvsTudor Black Bay

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

Arctic OSAR 46mm Automatic
MarathonArctic OSAR 46mm Automatic
MSRP $2,500
Black Bay
TudorBlack Bay

At a glance

12 of 29 specs differ
Diameter
Arctic OSAR 46mm Automatic46mm
Black Bay41mm
Power Reserve
Arctic OSAR 46mm Automatic40h
Black Bay70h
Water Resistance
Arctic OSAR 46mm Automatic300m
Black Bay200m
MSRP
Arctic OSAR 46mm Automatic$2,500
Black Bay

Full specifications

Case

8 specs
Diameter
46mm
41mm
Thickness
13mm
14.7mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
22mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
200m
Caseback
Solid
Engraved

Crystal & Dial

1 specs
Dial Color
White
Black

Movement

2 specs
Caliber
Sellita SW220-1
MT5602
Power Reserve
40h
70h

Pricing

1 specs
MSRP
$2,500

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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 46mm Automatic

Owners widely praise the Marathon Arctic OSAR 46mm Automatic for its overbuilt toughness and industrial, instrument-like aesthetic, with some preferring the Arctic dial for legibility. One owner notes the automatic movement may be unnecessary for rough use compared to a quartz option. Reviewers mention the MaraGlo luminous paint and a Sellita SW200-1 automatic movement. Some owners question its rising price and luxury positioning, with one reporting poor lume and movement performance. Overall, owners value the Marathon Arctic OSAR 46mm Automatic for its robust build and utilitarian design.

Tudor Black Bay

Owners widely praise the Tudor Black Bay for its comfortable wearability, robust build, and vintage-inspired aesthetics, with specific mentions of its satisfying winding feel and sturdy bezel action. Reviewers highlight the 39mm Black Bay 58's comfortable size and thinness, while others note the 41mm Master Chronometer's reliable timekeeping and magnetic resistance. Some owners find the GMT hand difficult to distinguish in low light. A recurring point of contention across multiple sources is the lack of on-the-fly micro-adjustment on the bracelet, though some find aftermarket solutions adequate. One owner reported the watch losing two minutes a day after six years, requiring a service. Overall, owners and reviewers rate the Tudor Black Bay highly for its blend of vintage charm, modern robustness, and comfortable wearability.

From video reviewers

The COSC-certified accuracy of the movement is a notable strength. The 14.7mm to 14.8mm thickness is cited as a potential drawback. Reviewers are divided on whether the newer models represent a departure from the Black Bay's heritage design.

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