Side by side

Sinn 105 St Sa UTCvsFortis Marinemaster M-40

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

105 St Sa UTC
Sinn105 St Sa UTC
MSRP $1,998
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

16 of 29 specs differ
Diameter
105 St Sa UTC41mm
Marinemaster M-4040mm
Power Reserve
105 St Sa UTC38h
Marinemaster M-4038h
Water Resistance
105 St Sa UTC200m
Marinemaster M-40300m
MSRP
105 St Sa UTC$1,998
Marinemaster M-40$3,520

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
41mm
40mm
Thickness
11.9mm
13mm
Lug Width
20mm
21mm
Finish
bead-blasted
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
Orange
Indices
Applied
Lume
Luminescent
None

Movement

3 specs
Caliber
SW 330-2
Sellita SW220-1
Jewels
25
26
Complications
Date, GMT
None

Pricing

1 specs
MSRP
$1,998
$3,520

Follow this matchup

Get a note when Sinn 105 St Sa UTC vs Fortis Marinemaster M-40 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.

Sinn 105 St Sa UTC

Owners and reviewers widely praise the Sinn 105 St Sa UTC for its legible dial, precise bi-directional bezel action, and the technical, toolish aesthetic of its bead-blasted, TEGIMENT-hardened steel case. The watch is noted for its smooth sweep and snappy date change, with accuracy often within COSC standards, and its vertical day/date display with a German day wheel is a distinctive feature. Some owners find the lug-to-lug distance large for smaller wrists, and the bracelet clasp is considered a weakness by one source, while the non-lumed UTC hand is a deliberate design choice. The Sinn 105 St Sa UTC utilizes a Sellita SW330-1 automatic movement with a 42-hour power reserve and offers 200 meters of water resistance. Overall, the consensus is that owners and reviewers rate the Sinn 105 St Sa UTC highly for its robust build quality and functional tool watch design at its price point.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

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.