Side by side

Hamilton Khaki Aviation Pilot Day-Date - Air Zermatt AutovsBoldr Odyssey Freediver

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

Odyssey Freediver
BoldrOdyssey Freediver
MSRP $649

At a glance

11 of 29 specs differ
Diameter
Khaki Aviation Pilot Day-Date - Air Zermatt Auto42mm
Odyssey Freediver40mm
Power Reserve
Khaki Aviation Pilot Day-Date - Air Zermatt Auto80h
Odyssey Freediver40h
Water Resistance
Khaki Aviation Pilot Day-Date - Air Zermatt Auto100m
Odyssey Freediver300m
MSRP
Khaki Aviation Pilot Day-Date - Air Zermatt Auto$1,075
Odyssey Freediver$649

Full specifications

Case

5 specs
Category
Pilot
Diver
Diameter
42mm
40mm
Thickness
12.15mm
14.2mm
Lug-to-Lug
46mm
48mm
Water Resistance
100m
300m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Black
202
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
H-40
Cal
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$1,075
$649

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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.

Boldr Odyssey Freediver

The Boldr Odyssey Freediver is praised for its bead-blasted steel case with polished bevels and a custom steel bracelet designed for wrist curvature. Reviewers note its strong legibility, applied details, and vintage-inspired date window on fresh dial colors. The 44mm case is surgical-grade steel with a brushed finish and angular lugs, water-resistant to 300 meters. It houses a Miyota 9075 movement with a jumping local hour function. On balance, reviewers highlight the Boldr Odyssey Freediver's thoughtful case finishing and functional movement with a local hour complication.

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