Side by side

Fortis Marinemaster M-44vsTudor Black Bay 58 GMT

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

Marinemaster M-44
FortisMarinemaster M-44
MSRP $5,120
Black Bay 58 GMT
TudorBlack Bay 58 GMT
MSRP $5,525

At a glance

18 of 29 specs differ
Diameter
Marinemaster M-4444mm
Black Bay 58 GMT39mm
Power Reserve
Marinemaster M-4438h
Black Bay 58 GMT65h
Water Resistance
Marinemaster M-44300m
Black Bay 58 GMT200m
MSRP
Marinemaster M-44$5,120
Black Bay 58 GMT$5,525

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
44mm
39mm
Thickness
14mm
12.8mm
Lug Width
22mm
12.8mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Orange
Black

Movement

7 specs
Caliber
Sellita SW220-1
MT5450-U
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
65h
Jewels
26
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT

Pricing

1 specs
MSRP
$5,120
$5,525

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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.

Tudor Black Bay 58 GMT

The Tudor Black Bay 58 GMT is widely praised for its functional, proportional, and ergonomic design, wearing identically to the standard Black Bay 58 and feeling substantial without being oversized. Owners are very happy with the 39mm case proportions, noting an improved 12.8mm height. The gilt dial aesthetics and gilt-effect accents are a point of praise for some, while others find them divisive. The Tudor Black Bay 58 GMT features the METAS-certified MT5450-U movement, which is anti-magnetic to 15,000 Gauss and offers a 65-hour power reserve. On balance, owners and reviewers rate the Tudor Black Bay 58 GMT highly for its improved case proportions and gilt dial aesthetics.

From video reviewers

The comfortable 39mm case size is a significant strength. The value at its price point is also a shared positive. Reviewers did not reach a consensus on any weaknesses.

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