Side by side

Fortis Marinemaster M-40vsSternglas Naos Pro Automatik

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

Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520
Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755

At a glance

12 of 29 specs differ
Diameter
Marinemaster M-4040mm
Naos Pro Automatik38mm
Power Reserve
Marinemaster M-4038h
Naos Pro Automatik42h
Water Resistance
Marinemaster M-40300m
Naos Pro Automatik50m
MSRP
Marinemaster M-40$3,520
Naos Pro Automatik$755

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
40mm
38mm
Thickness
13mm
9mm
Lug-to-Lug
42.4mm
Lug Width
21mm
20mm
Water Resistance
300m
50m

Crystal & Dial

2 specs
Dial Color
Orange
Lume
None
Luminova Punkte

Movement

3 specs
Caliber
Sellita SW220-1
Miyota 9015
Power Reserve
38h
42h
Jewels
26

Pricing

1 specs
MSRP
$3,520
$755

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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.

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.

Sternglas Naos Pro Automatik

The Sternglas Naos Pro Automatik is praised for its slim 9mm case and Bauhaus dial design, featuring clear hour markers and a framed date window. Owners note the upgraded Miyota 9015 movement with a 4Hz beat rate. Accuracy is reported as -10/+30 seconds per day, which is not ideal for precision enthusiasts. The five-link bracelet's lack of fitted end-links and the optional bracelet's chunkiness are flagged as areas lacking refinement. Overall, reviewers highlight the Sternglas Naos Pro Automatik's improved wearability and premium feel at its price point.

From video reviewers

The Bauhaus design is a strength. The value proposition is a weakness.

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