Side by side

Fortis Marinemaster M-40vsYema Wristmaster Slim CMM.20

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
Wristmaster Slim CMM.20
YemaWristmaster Slim CMM.20
MSRP $2,117

At a glance

11 of 29 specs differ
Diameter
Marinemaster M-4040mm
Wristmaster Slim CMM.2039mm
Power Reserve
Marinemaster M-4038h
Wristmaster Slim CMM.2040h
Water Resistance
Marinemaster M-40300m
Wristmaster Slim CMM.20100m
MSRP
Marinemaster M-40$3,520
Wristmaster Slim CMM.20$2,117

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
13mm
9mm
Lug Width
21mm
24mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Dial Color
Orange
Black

Movement

3 specs
Caliber
Sellita SW220-1
Yema CMM.20
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$3,520
$2,117

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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.

Yema Wristmaster Slim CMM.20

The Yema Wristmaster Slim CMM.20 is widely praised for its compelling integrated bracelet design and comfortable 39mm wearability. Reviewers highlight its impressive value, featuring an in-house CMM.20 micro-rotor movement with a 70-hour power reserve, adjusted to -3/+7 seconds per day, all within a slim 9mm case. Some note the domed sapphire crystal can produce glare and the dial text is quite small. On balance, reviewers rate the Yema Wristmaster Slim CMM.20 highly for its integrated design and value proposition with a micro-rotor movement.

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