Side by side

Fortis Marinemaster M-44 DLCvsSeestern S456 GMT

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

Marinemaster M-44 DLC
FortisMarinemaster M-44 DLC
MSRP $5,450
S456 GMT
SeesternS456 GMT
MSRP $299

At a glance

16 of 29 specs differ
Diameter
Marinemaster M-44 DLC44mm
S456 GMT41mm
Power Reserve
Marinemaster M-44 DLC38h
S456 GMT41hh
Water Resistance
Marinemaster M-44 DLC300m
S456 GMT200m
MSRP
Marinemaster M-44 DLC$5,450
S456 GMT$299

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
44mm
41mm
Thickness
14mm
13mm
Lug-to-Lug
49mm
Lug Width
22mm
20mm
Material
Stainless Steel (DLC)
316L Stainless Steel
Finish
Brushed and polished
Brushed + Polished
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Black
Sunray style, applied and Diamond cut Indices, C1 lume
Lume
None
C1

Movement

5 specs
Caliber
Sellita SW220-1
Seiko NH34
Beat Rate
28,800 vph
3 vph
Power Reserve
38h
41hh
Jewels
26
24
Complications
None
GMT

Pricing

1 specs
MSRP
$5,450
$299

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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 DLC

The Fortis Marinemaster M-44 DLC is widely praised for its robust COSC-certified Kenissi Werk 11 movement, offering a 70-hour power reserve, and its stealthy, scratch-resistant Dianoir DLC coating. Owners find it comfortable to wear despite its 44mm size, with one owner considering it a standout piece. Some reviewers note a subtle difference in the color tone of the DLC coating on the crown and bezel lock between variants. Overall, owners and reviewers regard the Fortis Marinemaster M-44 DLC highly for its durable construction and reliable, high-spec movement.

Seestern S456 GMT

Owners widely praise the Seestern S456 GMT for its exceptional value and finishing that exceeds expectations, with one owner noting its accuracy surpasses that of their Seiko 5. The dial displays a pearl-like rainbow effect. Some owners would prefer a bidirectional bezel over the current unidirectional one. The Seestern S456 GMT features an NH34 movement, a 39.5mm case, sapphire crystal, and an adjustable clasp. On balance, owners rate the Seestern S456 GMT highly for its impressive finishing and value proposition at its price point.

From video reviewers

The watch features stunning, detailed finishing that is difficult to top. Reviewers did not reach a consensus on any weaknesses.

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