Side by side

Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's WatchvsZelos Thresher 41 GMT

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

Thresher 41 GMT
ZelosThresher 41 GMT
MSRP $729

At a glance

14 of 29 specs differ
Diameter
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm
Thresher 41 GMT41mm
Power Reserve
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h
Thresher 41 GMT40h
Water Resistance
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m
Thresher 41 GMT200m
MSRP
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800
Thresher 41 GMT$729

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
39.5mm
41mm
Thickness
12.3mm
11.5mm
Lug-to-Lug
47.2mm
41mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Damascus LE
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

3 specs
Caliber
6L37
Miyota 9075 GMT
Power Reserve
45h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$2,800
$729

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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.

Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

The Seiko Prospex Marinemaster 1965 Heritage Diver's Watch is praised for its faithful re-creation of the 62MAS design, with reviewers noting improved wearability due to smaller case sizes (38mm to 40mm) and updated bracelets. Specific models feature a stainless steel case with super-hard coating, ceramic bezel, and a tool-free extension system on the bracelet. Accuracy figures vary, with one model rated at -5/+10 seconds per day and another at -10/+15 seconds per day, powered by movements like the Caliber 8L45 or 6L37 offering 72-hour or 46-hour power reserves respectively. Some reviewers point out drawbacks such as an unsigned winding crown, a lack of tool-free micro-adjust on the clasp for certain models, and a secondary GMT function on one variant. The price point, ranging from $2,800 to $3,600, is considered high by some, especially when compared to other Seiko or Grand Seiko offerings.

Zelos Thresher 41 GMT

Owners widely praise the Zelos Thresher 41 GMT for its creative design, titanium construction, and excellent lume. Some find the worldtimer bezel busy and the GMT function less easy to read, while others note the double Mother of Pearl dial's dynamic color shifts can be reflective in direct sun. The bezel-based world timer requires manual adjustment and allows for independent GMT use. Overall, owners rate the Zelos Thresher 41 GMT highly for its unique titanium build and striking dial at its price point.

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