Side by side

Fortis Marinemaster M-44vsSeiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

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

At a glance

13 of 29 specs differ
Diameter
Marinemaster M-4444mm
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition40.5mm
Power Reserve
Marinemaster M-4438h
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition70h
Water Resistance
Marinemaster M-44300m
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition200m
MSRP
Marinemaster M-44$5,120
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition$1,250

Full specifications

Case

5 specs
Diameter
44mm
40.5mm
Thickness
14mm
13.2mm
Lug-to-Lug
47.6mm
Lug Width
22mm
20mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
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
$5,120
$1,250

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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-44

The Fortis Marinemaster M-44 is praised for its excellent build quality and wearability, featuring a highly legible dial and a COSC-certified Kenissi-based movement that ran at 0 seconds per day. Owners appreciate its 70-hour power reserve and the inclusion of multiple straps and a deployant buckle, noting its gorgeous appearance and great wrist presence. A minor point raised is the 21mm lug width, with a wish for it to be 22mm. The Fortis Marinemaster M-44 is priced at $4,150. Overall, owners and reviewers rate the Fortis Marinemaster M-44 highly for its robust specifications and comfortable wearability at its price point.

Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition for its unique dial color and execution, with one owner noting its 44mm lug-to-lug measurement is perfect for most wrists. The dial is inspired by Okinawa's ocean colors and is expected to feature a bright sunburst effect. Accuracy figures for the 6R35 movement range from -10/+10 seconds per day when off/on the wrist, which some find "pretty amazing." However, some owners consider the price of around 1500€ too high, suggesting a value closer to 900€, and there are mixed reports on the 6R movement's accuracy. Overall, owners rate the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition highly for its distinctive dial and wearability, despite some reservations about its price point.

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