Side by side

Sinn 903 St IIvsMarathon MSAR (Medium Search & Rescue) Diver's Automatic

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sinn 903 St II

The Sinn 903 St II is widely praised for its robust build quality, over-engineered feel, and strong value proposition, featuring 200 meters of water resistance and a La Joux-Perret L110 column-wheel chronograph movement. Owners appreciate the hybrid ceramic lume and the practical functionality of the slide rule operated by the bezel. However, reviewers note that the busy slide-rule dial can make time-reading challenging, with some finding the chronograph hand's placement over the "12" numeral less refined. On balance, owners and reviewers rate the Sinn 903 St II highly for its exceptional build quality and value, particularly its robust water resistance and functional slide rule at its price point.

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.

At a glance

18 of 29 specs differ
Diameter
903 St II41mm
MSAR (Medium Search & Rescue) Diver's Automatic36mm
Power Reserve
903 St II60h
MSAR (Medium Search & Rescue) Diver's Automatic
Water Resistance
903 St II200m
MSAR (Medium Search & Rescue) Diver's Automatic300m
MSRP
903 St II$3,942
MSAR (Medium Search & Rescue) Diver's Automatic$1,800

Full specifications

Case

8 specs
Category
Tool
Diver
Diameter
41mm
36mm
Thickness
14.5mm
18mm
Lug Width
22mm
18mm
Material
Stainless Steel
316L Stainless Steel
Finish
polished / satinized
Water Resistance
200m
300m
Caseback

Crystal & Dial

4 specs
Crystal Shape
AR Coating
Underside
Dial Color
Black
White
Indices

Movement

5 specs
Caliber
La Joux-Perret L110
Sellita SW200-1
Beat Rate
28,800 vph
0 vph
Power Reserve
60h
0h
Jewels
26
0
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$3,942
$1,800
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