Side by side

Oak & Oscar The Humboldt 12-hrvsZelos Helica Moonphase

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
Helica Moonphase
ZelosHelica Moonphase
MSRP $1,049

At a glance

16 of 29 specs differ
Diameter
The Humboldt 12-hr39.5mm
Helica Moonphase39mm
Power Reserve
The Humboldt 12-hr42 hoursh
Helica Moonphase40h
Water Resistance
The Humboldt 12-hr200m
Helica Moonphase100m
MSRP
The Humboldt 12-hr$1,750
Helica Moonphase$1,049

Full specifications

Case

6 specs
Category
Tool
Moonphase
Diameter
39.5mm
39mm
Thickness
12.4mm
10mm
Lug-to-Lug
46.8mm
39mm
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid

Crystal & Dial

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

Movement

5 specs
Caliber
ETA 2892A2
Sellita SW288 Moonphase
Beat Rate
4 vph
28,800 vph
Power Reserve
42 hoursh
40h
Jewels
21
25
Complications
GMT, Chronograph, Date
None

Pricing

1 specs
MSRP
$1,750
$1,049

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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.

Zelos Helica Moonphase

Owners widely praise the Zelos Helica Moonphase for its gorgeous aventurine dial, unique industrial-dress aesthetic, and comfortable wearability, with one owner calling it spectacular and another their favorite Zelos. The moonphase complication is frequently highlighted as beautiful, though some find the double moon distracting or the dial cluttered. A manual-wind movement combined with a screw-down crown is noted as a drawback by some, requiring adjustment and potentially feeling fragile when fully wound, while one owner reports a 43-hour power reserve. On balance, owners rate the Zelos Helica Moonphase highly for its stunning aventurine dial and unique design at its price point.

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