Side by side
Oak & Oscar The Humboldt GMT USSS EditionvsSeiko Prospex LX line
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
The Humboldt GMT USSS Edition39.5mm
Prospex LX line44.8mm
Power Reserve
The Humboldt GMT USSS Edition56 hoursh
Prospex LX line72h
Water Resistance
The Humboldt GMT USSS Edition200m
Prospex LX line200m
MSRP
The Humboldt GMT USSS Edition$2,200
Prospex LX line$5,500
Full specifications
Case
6 specsDiameter
39.5mm
44.8mm
Thickness
12.5mm
14.7mm
Lug-to-Lug
46.8mm
50.9mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium
Caseback
Engraved
Solid
Crystal & Dial
3 specsCrystal Shape
Double-domed
Flat
AR Coating
Inner
Super-clear coating
Lume
Super-LumiNova BGW9
LumiBrite on hands and index(es)
Movement
4 specsCaliber
Sellita SW330
5R66
Type
Automatic
Spring Drive
Power Reserve
56 hoursh
72h
Jewels
25
30
Pricing
1 specsMSRP
$2,200
$5,500
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