Side by side

Nivada Grenchen DepthmastervsSeiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Nivada Grenchen Depthmaster

Owners widely report terrific build quality and a feel similar to the 1960s original, with some appreciating its reasonable lug-to-lug and better-than-expected appearance in person. The compact 39mm case is praised for its wearability, especially on smaller wrists, and offers impressive 1,000m water resistance. However, the Soprod P024 movement's 38-hour power reserve is a point of criticism, as is a bezel that can be difficult to grip and weak lume. Some owners find the watch wears on the smaller side, and the date complication is seen by one owner as detracting from the design. The "Pacman" variant is noted as polarizing, with one owner questioning their purchase, while the "Ghost Purple" variant's 30 and 45 numerals are described as having a rushed aesthetic. Overall, owners and reviewers rate the Nivada Grenchen Depthmaster highly for its faithful reissue, impressive water resistance, and comfortable wearability at a competitive price.

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.

At a glance

14 of 29 specs differ
Diameter
Depthmaster39mm
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm
Power Reserve
Depthmaster38h
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h
Water Resistance
Depthmaster1,000m
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m
MSRP
Depthmaster$1,050
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800

Full specifications

Case

5 specs
Diameter
39mm
39.5mm
Thickness
13mm
12.3mm
Lug-to-Lug
39mm
47.2mm
Water Resistance
1000m
200m
Caseback
Stainless Steel 316

Crystal & Dial

4 specs
Crystal Shape
Box
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Sellita SW200-1
6L37
Power Reserve
38h
45h
Jewels
0
26
Complications
GMT
None

Pricing

1 specs
MSRP
$1,050
$2,800
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