Side by side
Citizen Promaster Air GMTvsOak & Oscar The Humboldt GMT USSS Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Promaster Air GMT44.5mm
The Humboldt GMT USSS Edition39.5mm
Power Reserve
Promaster Air GMT50h
The Humboldt GMT USSS Edition56 hoursh
Water Resistance
Promaster Air GMT200m
The Humboldt GMT USSS Edition200m
MSRP
Promaster Air GMT$1,195
The Humboldt GMT USSS Edition$2,200
Full specifications
Case
7 specsCategory
Pilot
GMT
Diameter
44.5mm
39.5mm
Thickness
12mm
12.5mm
Lug-to-Lug
46mm
46.8mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Caseback
Solid
Engraved
Crystal & Dial
4 specsCrystal Shape
Flat
Double-domed
AR Coating
Underside
Inner
Dial Color
Navy
Black
Lume
None
Super-LumiNova BGW9
Movement
2 specsCaliber
9054
Sellita SW330
Power Reserve
50h
56 hoursh
Pricing
1 specsMSRP
$1,195
$2,200
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