Side by side
Oak & Oscar The Humboldt GMT TitaniumvsZelos Helica
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
The Humboldt GMT Titanium39.5mm
Helica39mm
Power Reserve
The Humboldt GMT Titanium56 hoursh
Helica40h
Water Resistance
The Humboldt GMT Titanium200m
Helica100m
MSRP
The Humboldt GMT Titanium$2,950
Helica$499
Full specifications
Case
7 specsCategory
GMT
Diver
Diameter
39.5mm
39mm
Thickness
12.5mm
10.5mm
Lug-to-Lug
46.8mm
39mm
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
39 - Wave MOP
Lume
Super-LumiNova
None
Movement
3 specsCaliber
Sellita SW330
Miyota 9015
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
40h
Pricing
1 specsMSRP
$2,950
$499
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