Side by side

Oak & Oscar The Humboldt 12-hrvsSeiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

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

At a glance

15 of 29 specs differ
Diameter
The Humboldt 12-hr39.5mm
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm
Power Reserve
The Humboldt 12-hr42 hoursh
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h
Water Resistance
The Humboldt 12-hr200m
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m
MSRP
The Humboldt 12-hr$1,750
Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800

Full specifications

Case

5 specs
Category
Tool
Diver
Thickness
12.4mm
12.3mm
Lug-to-Lug
46.8mm
47.2mm
Material
316L Stainless Steel
Stainless Steel
Caseback
Solid screw-down
Solid

Crystal & Dial

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

Movement

5 specs
Caliber
ETA 2892A2
6L37
Beat Rate
4 vph
28,800 vph
Power Reserve
42 hoursh
45h
Jewels
21
26
Complications
GMT, Chronograph, Date
None

Pricing

1 specs
MSRP
$1,750
$2,800

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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.

Oak & Oscar The Humboldt 12-hr

Oak & Oscar The Humboldt 12-hr owners widely praise its comfortable, solid bracelet with screw links and tight end-link fit, along with its awesome sandwich dial featuring superb grain and crisp details. The 12-hour bezel is noted as excellent for tracking a second time zone, and the orange second hand adds a nice pop. One owner reports the watch has outstanding quality and a perfect fit on smaller wrists, while another notes its legibility and great presence on various straps. A reviewer describes it as a 40mm stainless steel tool watch with a matte, brushed finish and a sandwich dial, powered by an ETA 2892-A2 movement with a 42-hour power reserve. Some in the line report the lume could be brighter. On balance, owners and reviewers rate Oak & Oscar The Humboldt 12-hr highly for its build quality and versatile tool-watch design.

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.

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