Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 36mmvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

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

OSAR-D (Original SAR with Date) Automatic 36mm
MarathonOSAR-D (Original SAR with Date) Automatic 36mm
MSRP $1,200

At a glance

12 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 36mm36mm
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 36mm40h
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 36mm300m
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
MSRP
OSAR-D (Original SAR with Date) Automatic 36mm$1,200
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600

Full specifications

Case

5 specs
Diameter
36mm
42.6mm
Thickness
13mm
14.1mm
Lug-to-Lug
43.5mm
49.3mm
Lug Width
18mm
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW220-1
8L45
Power Reserve
40h
72h
Jewels
25
35

Pricing

1 specs
MSRP
$1,200
$3,600

Follow this matchup

Get a note when Marathon OSAR-D (Original SAR with Date) Automatic 36mm vs Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch gets more votes, a community discussion, or a price drop. No account needed.

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 36mm

Owners widely praise the Marathon OSAR-D (Original SAR with Date) Automatic 36mm for its exceptional legibility, featuring large hour markers and MaraGlo lume. The watch is noted for its comfortable wearability and competent Swiss-made Selitta SW200-1 automatic movement, offering 300-meter water resistance and a sapphire crystal. Some enthusiasts find the price of $1,380 USD on rubber to be excessive, particularly compared to past models or other brands, and the Spartan bracelet is described as lacking refinement. On balance, owners and reviewers find the Marathon OSAR-D Automatic 36mm a reliable and functional tool watch, with its clear dial and robust build being the primary draws.

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

The Seiko Prospex Marinemaster 1968 Heritage Diver's Watch is widely praised for its excellent quality and finishing, with reviewers and owners noting its GS-level craftsmanship and Zaratsu-inspired polishing. Owners appreciate its refined design, comfortable case shape, and the 4:00 crown position, with some finding it more manageable on the wrist than other models. The Caliber 8L45 movement offers a 72-hour power reserve and accuracy within -5/+10 seconds per day, and the bracelet features an improved clasp with an extension system. However, some find the price point high, and one reviewer noted the unsigned winding crown as a missed opportunity. On balance, owners and reviewers rate the Seiko Prospex Marinemaster 1968 Heritage Diver's Watch highly for its premium finishing and tool-like appearance at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.