Side by side
Oak & Oscar The Humboldt GMT TitaniumvspOrtahl Zenmaster
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
The Humboldt GMT Titanium39.5mm
Zenmaster40.5mm
Power Reserve
The Humboldt GMT Titanium56 hoursh
Zenmaster42h
Water Resistance
The Humboldt GMT Titanium200m
Zenmaster100m
MSRP
The Humboldt GMT Titanium$2,950
Zenmaster$695
Full specifications
Case
8 specsCategory
GMT
—
Diameter
39.5mm
40.5mm
Thickness
12.5mm
10.2mm
Lug-to-Lug
46.8mm
—
Lug Width
20mm
—
Material
Grade 5 Titanium
316L Stainless Steel
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid
Crystal & Dial
4 specsCrystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
Green
—
Lume
Super-LumiNova
None
Movement
3 specsCaliber
Sellita SW330
Miyota 9015
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
42h
Pricing
1 specsMSRP
$2,950
$695
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