Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsSeestern S450 Ocean Star

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

OSAR-D (Original SAR with Date) Automatic 41mm
MarathonOSAR-D (Original SAR with Date) Automatic 41mm
MSRP $1,800
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

13 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 41mm41mm
S450 Ocean Star40mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 41mm40h
S450 Ocean Star41h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 41mm300m
S450 Ocean Star100m
MSRP
OSAR-D (Original SAR with Date) Automatic 41mm$1,800
S450 Ocean Star$299

Full specifications

Case

5 specs
Diameter
41mm
40mm
Thickness
13mm
12mm
Lug-to-Lug
43.5mm
48mm
Lug Width
18mm
20mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Black
White
Lume
None
Tritium

Movement

5 specs
Caliber
Sellita SW220-1
TMI NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
40h
41h
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,800
$299

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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 41mm

The Marathon OSAR-D (Original SAR with Date) Automatic 41mm is noted for its highly legible white dial with applied hour markers and a functional date magnifier, emphasizing its tool-watch purpose. Its Swiss-made Sellita SW200-1 movement is considered reliable and serviceable. One reviewer found the bracelet lacked refinement and preferred the rubber strap option. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 41mm for its excellent legibility and robust movement.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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