Side by side
Oak & Oscar The Humboldt GMT USSS EditionvsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
The Humboldt GMT USSS Edition39.5mm
Prospex Sea41.3mm
Power Reserve
The Humboldt GMT USSS Edition56 hoursh
Prospex Sea72h
Water Resistance
The Humboldt GMT USSS Edition200m
Prospex Sea300m
MSRP
The Humboldt GMT USSS Edition$2,200
Prospex Sea$1,100
Full specifications
Case
6 specsCategory
GMT
Diver
Diameter
39.5mm
41.3mm
Lug-to-Lug
46.8mm
48.2mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m
Caseback
Engraved
Solid
Crystal & Dial
3 specsCrystal Shape
Double-domed
Flat
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
Super-LumiNova BGW9
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Sellita SW330
6R55
Power Reserve
56 hoursh
72h
Jewels
25
24
Pricing
1 specsMSRP
$2,200
$1,100
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