Side by side

Sinn 903 St IIvsFortis Marinemaster M-44

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

903 St II
Sinn903 St II
MSRP $3,942
Marinemaster M-44
FortisMarinemaster M-44
MSRP $5,120

At a glance

14 of 29 specs differ
Diameter
903 St II41mm
Marinemaster M-4444mm
Power Reserve
903 St II60h
Marinemaster M-4438h
Water Resistance
903 St II200m
Marinemaster M-44300m
MSRP
903 St II$3,942
Marinemaster M-44$5,120

Full specifications

Case

6 specs
Category
Tool
Diver
Diameter
41mm
44mm
Thickness
14.5mm
14mm
Finish
polished / satinized
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
LJP L110
Sellita SW220-1
Power Reserve
60h
38h
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$3,942
$5,120

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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.

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.

Fortis Marinemaster M-44

The Fortis Marinemaster M-44 is praised for its excellent build quality and wearability, featuring a highly legible dial and a COSC-certified Kenissi-based movement that ran at 0 seconds per day. Owners appreciate its 70-hour power reserve and the inclusion of multiple straps and a deployant buckle, noting its gorgeous appearance and great wrist presence. A minor point raised is the 21mm lug width, with a wish for it to be 22mm. The Fortis Marinemaster M-44 is priced at $4,150. Overall, owners and reviewers rate the Fortis Marinemaster M-44 highly for its robust specifications and comfortable wearability at its price point.

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