Side by side

Fortis Marinemaster M-40vsHamilton Jazzmaster Maestro Auto Chrono

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
Jazzmaster Maestro Auto Chrono
HamiltonJazzmaster Maestro Auto Chrono
MSRP $1,995

At a glance

11 of 29 specs differ
Diameter
Marinemaster M-4040mm
Jazzmaster Maestro Auto Chrono45mm
Power Reserve
Marinemaster M-4038h
Jazzmaster Maestro Auto Chrono60h
Water Resistance
Marinemaster M-40300m
Jazzmaster Maestro Auto Chrono100m
MSRP
Marinemaster M-40$3,520
Jazzmaster Maestro Auto Chrono$1,995

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
40mm
45mm
Thickness
13mm
15.35mm
Lug-to-Lug
46mm
Lug Width
21mm
23mm
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Orange
Blue

Movement

3 specs
Caliber
Sellita SW220-1
H-21
Power Reserve
38h
60h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$1,995

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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.

Hamilton Jazzmaster Maestro Auto Chrono

Owners widely praise the Hamilton Jazzmaster Maestro Auto Chrono for its dramatic increase in quality and attention to detail, its versatile dial layout suitable for dressing up or down, and its bulletproof build that remains problem-free for years. Accuracy figures range from gaining about 5 seconds per day to keeping time within 10 seconds per day even after extended periods without service. Some owners find the lack of a second hand a deal-breaker, and the 45mm size can be chunky and may not fit under shirt sleeves. Concerns exist regarding the movement's serviceability, high maintenance costs, and intervals. On balance, owners rate the Hamilton Jazzmaster Maestro Auto Chrono highly for its robust build and quality for the price, despite some reservations about its size and serviceability.

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