Side by side
Oak & Oscar The Humboldt GMT TitaniumvsGrand Seiko SBGE307
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
SBGE30744.5mm
Power Reserve
The Humboldt GMT Titanium56 hoursh
SBGE30772h
Water Resistance
The Humboldt GMT Titanium200m
SBGE307200m
MSRP
The Humboldt GMT Titanium$2,950
SBGE307$11,500
Full specifications
Case
6 specsDiameter
39.5mm
44.5mm
Thickness
12.5mm
14.9mm
Lug-to-Lug
46.8mm
50mm
Lug Width
20mm
23mm
Material
Grade 5 Titanium
Titanium
Caseback
Solid screw-down
Solid
Crystal & Dial
4 specsCrystal Shape
Double-domed
Flat
AR Coating
Underside
Yes
Dial Color
Green
Black
Lume
Super-LumiNova
None
Movement
4 specsCaliber
Sellita SW330
9R66
Type
Automatic
Spring Drive
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
72h
Pricing
1 specsMSRP
$2,950
$11,500
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