Side by side
Hemel HD24 AutomaticvsOak & Oscar The Humboldt GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
HD24 Automatic40mm
The Humboldt GMT39.5mm
Power Reserve
HD24 Automatic40h
The Humboldt GMT56 hoursh
Water Resistance
HD24 Automatic200m
The Humboldt GMT200m
MSRP
HD24 Automatic$300
The Humboldt GMT$2,175
Full specifications
Case
6 specsCategory
Diver
GMT
Diameter
40mm
39.5mm
Thickness
13mm
12.5mm
Lug-to-Lug
48mm
46.8mm
Finish
Brushed and polished
Brushed
Caseback
Solid
Solid screw-down
Crystal & Dial
5 specsCrystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Gallant USAF Edition
White
Lume
None
Super-LumiNova
Movement
3 specsCaliber
Seiko NH38A
Sellita SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
56 hoursh
Pricing
1 specsMSRP
$300
$2,175
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