Side by side

Hamilton Khaki Aviation Day Date AutovsTissot Gentleman Open Heart

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

Khaki Aviation Day Date Auto
HamiltonKhaki Aviation Day Date Auto
MSRP $1,125
Gentleman Open Heart
TissotGentleman Open Heart
MSRP $1,025

At a glance

12 of 29 specs differ
Diameter
Khaki Aviation Day Date Auto42mm
Gentleman Open Heart40mm
Power Reserve
Khaki Aviation Day Date Auto80h
Gentleman Open Heart80h
Water Resistance
Khaki Aviation Day Date Auto100m
Gentleman Open Heart100m
MSRP
Khaki Aviation Day Date Auto$1,125
Gentleman Open Heart$1,025

Full specifications

Case

5 specs
Category
Pilot
Chronograph
Diameter
42mm
40mm
Thickness
12.15mm
11.5mm
Lug-to-Lug
46mm
40mm
Lug Width
20mm
21mm

Crystal & Dial

5 specs
Crystal Shape
Flat
Domed
AR Coating
Inner
Yes
Dial Color
Black
Silver
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

1 specs
Caliber
H-40
11 1/2'''

Pricing

1 specs
MSRP
$1,125
$1,025

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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 Day Date Auto

Owners and reviewers widely praise the Hamilton Khaki Aviation Day Date Auto for its handsome, legible dial with raised indices and day/date complications, and its versatile, modern pilot watch design. The fully brushed case and good lume are noted strengths, with one owner finding it wears comfortably on a NATO strap. The H-10 caliber offers an 80-hour power reserve, though its decoration and regulation are less refined. Some find the 42mm size large and the skeletonized hour hand tip visually unappealing, while others note the AR coating is decent but not exceptional. Overall, owners and reviewers rate the Hamilton Khaki Aviation Day Date Auto highly for its practical design and value at its price point.

Tissot Gentleman Open Heart

Owners widely praise the Tissot Gentleman Open Heart for its versatile dressy-sporty aesthetic and elegant sunburst dial finish, with one owner preferring its less shiny blue dial compared to other versions. The watch offers excellent fit and bracelet adjustability, and its modified Powermatic 80 movement achieves COSC-level accuracy of -3 to +5 seconds/day, though the seconds hand movement is slightly less smooth at 6 movements per second. However, one owner reported the watch arrived non-functional, requiring a return due to an inoperable movement. On balance, owners rate the Tissot Gentleman Open Heart highly for its aesthetic appeal and accurate timekeeping, despite a reported instance of a faulty movement.

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