Side by side

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

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

At a glance

14 of 29 specs differ
Diameter
Khaki Aviation Pilot Day-Date - Air Zermatt Auto42mm
The Humboldt GMT SAR Edition39.5mm
Power Reserve
Khaki Aviation Pilot Day-Date - Air Zermatt Auto80h
The Humboldt GMT SAR Edition56 hoursh
Water Resistance
Khaki Aviation Pilot Day-Date - Air Zermatt Auto100m
The Humboldt GMT SAR Edition200m
MSRP
Khaki Aviation Pilot Day-Date - Air Zermatt Auto$1,075
The Humboldt GMT SAR Edition$2,950

Full specifications

Case

7 specs
Category
Pilot
GMT
Diameter
42mm
39.5mm
Thickness
12.15mm
12.5mm
Lug-to-Lug
46mm
46.8mm
Material
Stainless Steel
Grade 5 Titanium
Water Resistance
100m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
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
$2,950

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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 SAR Edition

Oak & Oscar The Humboldt GMT SAR Edition is praised for its anti-magnetic properties, sandwich lume dial, and overall construction quality for its price point. It features a brushed Grade 5 titanium case, a navy blue sandwich dial with an orange minute track and seconds hand, and a Sellita SW330 movement with a 56-hour power reserve. Minor drawbacks noted include bracelet sizing adjustment and lume brightness. On balance, owners and reviewers rate Oak & Oscar The Humboldt GMT SAR Edition highly for its robust construction and unique dial design at its price point.

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