Side by side

Oak & Oscar The Humboldt 12-hrvsSeiko Prospex Sea

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

The Humboldt 12-hr
Oak & OscarThe Humboldt 12-hr
MSRP $1,750
Prospex Sea
SeikoProspex Sea
MSRP $1,500

At a glance

17 of 29 specs differ
Diameter
The Humboldt 12-hr39.5mm
Prospex Sea43.5mm
Power Reserve
The Humboldt 12-hr42 hoursh
Prospex Sea70h
Water Resistance
The Humboldt 12-hr200m
Prospex Sea200m
MSRP
The Humboldt 12-hr$1,750
Prospex Sea$1,500

Full specifications

Case

7 specs
Category
Tool
Diver
Diameter
39.5mm
43.5mm
Thickness
12.4mm
13.3mm
Lug-to-Lug
46.8mm
51mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium
Caseback
Solid screw-down
Solid

Crystal & Dial

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

Movement

5 specs
Caliber
ETA 2892A2
6R35
Beat Rate
4 vph
28,800 vph
Power Reserve
42 hoursh
70h
Jewels
21
24
Complications
GMT, Chronograph, Date
None

Pricing

1 specs
MSRP
$1,750
$1,500

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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 Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

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