Side by side

Oak & Oscar The Humboldt 12-hrvsGrand Seiko SBGR321

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
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

17 of 29 specs differ
Diameter
The Humboldt 12-hr39.5mm
SBGR32140mm
Power Reserve
The Humboldt 12-hr42 hoursh
SBGR32172h
Water Resistance
The Humboldt 12-hr200m
SBGR321100m
MSRP
The Humboldt 12-hr$1,750
SBGR321$5,200

Full specifications

Case

7 specs
Category
Tool
Dress
Diameter
39.5mm
40mm
Thickness
12.4mm
13mm
Lug-to-Lug
46.8mm
46.6mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Yes
Dial Color
Grey
Black
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
ETA 2892A2
9S65
Beat Rate
4 vph
28,800 vph
Power Reserve
42 hoursh
72h
Jewels
21
25
Complications
GMT, Chronograph, Date
None

Pricing

1 specs
MSRP
$1,750
$5,200

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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.

Grand Seiko SBGR321

Grand Seiko SBGR321 owners and reviewers widely praise its attractive design, compelling dimensions, and robust movement. The watch features sharp case lines with contrasting brushing and polishing, a 40mm steel case that provides presence without bulk, and 100m water resistance. Its sunburst blue dial, inspired by the dawn sky over Mount Iwate, showcases Grand Seiko's signature finishing on applied markers and hands, with a red-tipped seconds hand. The 9S65 automatic movement is noted for its precision, running within specifications, with one source reporting a +5 to -3 seconds a day rate and a 3-day power reserve. A blue rotor with a crimson rim, also inspired by Mount Iwate, is visible through the display caseback. On balance, owners and reviewers rate the Grand Seiko SBGR321 highly for its exceptional finishing and compelling blue dial design at its price point.

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