Side by side
Bremont Altitude Perpetual Calendar GMTvsOak & Oscar The Humboldt Seven Year
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
Altitude Perpetual Calendar GMT42mm
The Humboldt Seven Year39.5mm
Power Reserve
Altitude Perpetual Calendar GMT40h
The Humboldt Seven Year42h
Water Resistance
Altitude Perpetual Calendar GMT—
The Humboldt Seven Year200m
MSRP
Altitude Perpetual Calendar GMT$38,450
The Humboldt Seven Year$2,400
Full specifications
Case
7 specsCategory
GMT
Tool
Diameter
42mm
39.5mm
Thickness
12.65mm
12.4mm
Lug-to-Lug
—
46.8mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel + Brass
Water Resistance
—
200m
Crystal & Dial
4 specsCrystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Blue
Black
Lume
None
Super-LumiNova
Movement
4 specsCaliber
—
Sellita SW300
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
42h
Complications
None
GMT, Chronograph, Date
Pricing
1 specsMSRP
$38,450
$2,400
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