Side by side

Fortis Marinemaster M-40vsOak & Oscar The Humboldt GMT

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
The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175

At a glance

18 of 29 specs differ
Diameter
Marinemaster M-4040mm
The Humboldt GMT39.5mm
Power Reserve
Marinemaster M-4038h
The Humboldt GMT56 hoursh
Water Resistance
Marinemaster M-40300m
The Humboldt GMT200m
MSRP
Marinemaster M-40$3,520
The Humboldt GMT$2,175

Full specifications

Case

9 specs
Category
Diver
GMT
Diameter
40mm
39.5mm
Thickness
13mm
12.5mm
Lug-to-Lug
46.8mm
Lug Width
21mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Orange
White
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Sellita SW220-1
Sellita SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
38h
56 hoursh
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$2,175

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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.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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