Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 46mmvsTudor Black Bay Bronze

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

OSAR-D (Original SAR with Date) Automatic 46mm
MarathonOSAR-D (Original SAR with Date) Automatic 46mm
MSRP $2,500
Black Bay Bronze
TudorBlack Bay Bronze
MSRP $5,425

At a glance

19 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 46mm46mm
Black Bay Bronze43mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 46mm40h
Black Bay Bronze70h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 46mm300m
Black Bay Bronze200m
MSRP
OSAR-D (Original SAR with Date) Automatic 46mm$2,500
Black Bay Bronze$5,425

Full specifications

Case

8 specs
Diameter
46mm
43mm
Thickness
13mm
14.6mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
23mm
Material
316L Stainless Steel
Bronze
Finish
Brushed and polished
Satin
Water Resistance
300m
200m
Caseback
Solid
Engraved

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Grey
Indices
Applied

Movement

6 specs
Caliber
Sellita SW220-1
MT5601
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$2,500
$5,425

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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 46mm

The Marathon OSAR-D (Original SAR with Date) Automatic 46mm is widely regarded as a rugged and legible timepiece, featuring a familiar geometric dial with MaraGlo lume and a white dial with applied hour markers that enhance legibility. Owners and reviewers note its 300-meter water resistance and the reliable Swiss-made Sellita SW200-1 automatic movement with improved shock protection. The watch is described as large, thick, and heavy, with some owners finding it comfortable on the wrist while others note its substantial presence, particularly at a table. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 46mm for its rugged build and excellent legibility.

Tudor Black Bay Bronze

The Tudor Black Bay Bronze is widely praised for its unique, evolving aesthetic due to its bronze case that develops a pleasing patina over time, with owners finding this gradual aging process incrementally pleasurable and ideal for summer wear. Reviewers highlight its robust construction, in-house MT5601 movement with a 70-hour power reserve and excellent accuracy, with one source reporting it losing about one second every three days. The 43mm case size is noted as being larger than other Black Bay models, and while some find it surprisingly comfortable and well-proportioned with its Arabic numerals, others consider it too large and bold for daily wear under a suit cuff, with the bronze case deemed less smart than steel. The matte brown dial with an explorer-style layout and gilt snowflake hands are also frequently mentioned features. One owner specifically praised the bezel's feel as the best on the market, though another reviewer found the dial numerals and lume weak.

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