Side by side

Oak & Oscar The Humboldt 12-hrvsSerica Réf. 5303 PLD

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.

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.

Serica Réf. 5303 PLD

Owners widely praise the Serica Réf. 5303 PLD for its sophisticated design and refined finishing that exceeds its price point, noting its ability to blend dress and tool watch aesthetics and wear thinly under cuffs. One owner reports the screw-down crown has loosened during wear, raising concerns for dive-use integrity, while another questions the practicality of the no-deco dive scale for specialized diving. Reviewers find the 39mm case wears slightly small and note the mesh bracelet feels dainty for a military-themed watch. Overall, owners and reviewers rate the Serica Réf. 5303 PLD highly for its elegant finishing and versatile design that punches above its weight class.

At a glance

18 of 29 specs differ
Diameter
The Humboldt 12-hr39.5mm
Réf. 5303 PLD39mm
Power Reserve
The Humboldt 12-hr42 hoursh
Réf. 5303 PLD42h
Water Resistance
The Humboldt 12-hr200m
Réf. 5303 PLD300m
MSRP
The Humboldt 12-hr$1,750
Réf. 5303 PLD$1,974

Full specifications

Case

7 specs
Category
Tool
Diameter
39.5mm
39mm
Thickness
12.4mm
12.2mm
Lug-to-Lug
46.8mm
46.5mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m
Caseback
Solid screw-down

Crystal & Dial

5 specs
Crystal Shape
Double-domed
AR Coating
Underside
Dial Color
Grey
Indices
Applied
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
ETA 2892-A2
Soprod M100
Beat Rate
4 vph
0 vph
Power Reserve
42 hoursh
42h
Jewels
21
0
Complications
GMT, Chronograph, Date
None

Pricing

1 specs
MSRP
$1,750
$1,974
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