Side by side

Marathon MSAR (Medium Search & Rescue) Diver's AutomaticvsTudor Black Bay

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

MSAR (Medium Search & Rescue) Diver's Automatic
MarathonMSAR (Medium Search & Rescue) Diver's Automatic
MSRP $1,800
Black Bay
TudorBlack Bay

At a glance

12 of 29 specs differ
Diameter
MSAR (Medium Search & Rescue) Diver's Automatic36mm
Black Bay41mm
Power Reserve
MSAR (Medium Search & Rescue) Diver's Automatic40h
Black Bay70h
Water Resistance
MSAR (Medium Search & Rescue) Diver's Automatic300m
Black Bay200m
MSRP
MSAR (Medium Search & Rescue) Diver's Automatic$1,800
Black Bay

Full specifications

Case

8 specs
Diameter
36mm
41mm
Thickness
18mm
14.7mm
Lug-to-Lug
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 SW200-1
MT5602
Power Reserve
40h
70h

Pricing

1 specs
MSRP
$1,800

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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 MSAR (Medium Search & Rescue) Diver's Automatic

The Marathon MSAR (Medium Search & Rescue) Diver's Automatic is lauded for its utilitarian, no-nonsense design, exceptional tritium lume for visibility, and comfortable 41mm wearability. Reviewers highlight its robust build, meeting ISO 6425 dive watch standards and approved for military use, demonstrating durability during demanding activities. One reviewer notes the stock rubber strap requires modification for a proper fit. Overall, reviewers rate the Marathon MSAR (Medium Search & Rescue) Diver's Automatic highly for its focus on utility and ruggedness at its price point.

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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