Side by side
Oak & Oscar The Humboldt GMT TitaniumvsSeiko Prospex Sea
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
Prospex Sea41.3mm
Power Reserve
The Humboldt GMT Titanium56 hoursh
Prospex Sea72h
Water Resistance
The Humboldt GMT Titanium200m
Prospex Sea300m
MSRP
The Humboldt GMT Titanium$2,950
Prospex Sea$1,100
Full specifications
Case
6 specsCategory
GMT
Diver
Diameter
39.5mm
41.3mm
Lug-to-Lug
46.8mm
48.2mm
Material
Grade 5 Titanium
Stainless Steel
Water Resistance
200m
300m
Caseback
Solid screw-down
Solid
Crystal & Dial
4 specsCrystal Shape
Double-domed
Flat
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Green
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel
Movement
4 specsCaliber
Sellita SW330
6R55
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
72h
Jewels
25
24
Pricing
1 specsMSRP
$2,950
$1,100
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