Side by side

Hamilton Khaki Aviation Pilot Day-Date - Air Zermatt AutovsOak & Oscar The Humboldt GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175

At a glance

16 of 29 specs differ
Diameter
Khaki Aviation Pilot Day-Date - Air Zermatt Auto42mm
The Humboldt GMT39.5mm
Power Reserve
Khaki Aviation Pilot Day-Date - Air Zermatt Auto80h
The Humboldt GMT56 hoursh
Water Resistance
Khaki Aviation Pilot Day-Date - Air Zermatt Auto100m
The Humboldt GMT200m
MSRP
Khaki Aviation Pilot Day-Date - Air Zermatt Auto$1,075
The Humboldt GMT$2,175

Full specifications

Case

8 specs
Category
Pilot
GMT
Diameter
42mm
39.5mm
Thickness
12.15mm
12.5mm
Lug-to-Lug
46mm
46.8mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed
Water Resistance
100m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Black
White
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
H-40
Sellita SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
80h
56 hoursh

Pricing

1 specs
MSRP
$1,075
$2,175

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Khaki Aviation Pilot Day-Date - Air Zermatt Auto

The Hamilton Khaki Aviation Pilot Day-Date - Air Zermatt Auto is widely praised for its value, with reviewers noting the Swatch Group's economies of scale contribute to its affordability. Owners and reviewers highlight the large, easy-to-read dial, with one source specifically mentioning the "ice-cold" blue degradé sub-dials as an unusual chromatic anomaly for its price point, and another noting the painted, luminous indices as a significant advantage. The 42mm case is described as offering a nice mix of brushed and polished finishes, and the slightly domed sapphire crystal enhances readability. The H-21 caliber provides a 60-hour power reserve and an anti-magnetic silicon balance spring, while the ETA 2834-2 movement offers precise day/date changes, though one source notes its 40-hour power reserve requires weekly winding. Some criticism is directed at the use of three different fonts and inconsistent color matching for the day/date indicators.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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