Side by side

Fortis Marinemaster M-40vsSeiko Prospex Sea PADI Special Edition

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
Prospex Sea PADI Special Edition
SeikoProspex Sea PADI Special Edition
MSRP $1,200

At a glance

12 of 29 specs differ
Diameter
Marinemaster M-4040mm
Prospex Sea PADI Special Edition45mm
Power Reserve
Marinemaster M-4038h
Prospex Sea PADI Special Edition70h
Water Resistance
Marinemaster M-40300m
Prospex Sea PADI Special Edition200m
MSRP
Marinemaster M-40$3,520
Prospex Sea PADI Special Edition$1,200

Full specifications

Case

5 specs
Diameter
40mm
45mm
Thickness
13mm
13.4mm
Lug-to-Lug
52.6mm
Lug Width
21mm
20mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Orange
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW220-1
6R35
Power Reserve
38h
70h
Jewels
26
24

Pricing

1 specs
MSRP
$3,520
$1,200

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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.

Seiko Prospex Sea PADI Special Edition

The Seiko Prospex Sea PADI Special Edition is widely praised for its attractive PADI color schemes, often featuring blue and red accents, and striking dials described as gorgeous and standing out in the light. Owners report excellent build quality and bezel action, with one noting the watch feels like it can take a beating, and another highlighting the lume as among the best. The bracelet is also frequently called high-quality and exceeding expectations for its price point. However, some owners find the case design can make the watch feel top-heavy, and the pin and collar system on the bracelet can be difficult during resizing. The accuracy of the 4R35 movement is noted as +45 to -35 seconds per day, and some may prefer sapphire over the Hardlex crystal. Overall, owners and reviewers rate the Seiko Prospex Sea PADI Special Edition highly for its distinctive aesthetics and robust build at its price point.

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