Hamilton Khaki Aviation Takeoff Auto ChronovsLIV Watches P-51

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Hamilton Khaki Aviation Takeoff Auto Chrono at true scale

Khaki Aviation Takeoff Auto Chrono

LIV Watches P-51 at true scale

P-51

Diameter

46mm

46mm

Lug-to-Lug

n/a

52.4mm

Thickness

16.2mm

15.5mm

lowest

Water Resistance

50m

300m

highest

Power Reserve

60h

highest

12h

MSRP

$3,575

$2,200

lowest

Movement

Hamilton H-31

Valjoux 7750

Case

5 specs
Thickness
16.2mm
15.5mm
Lug-to-Lug
n/a
52.4mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
50m
300m

Crystal & Dial

1 specs
Dial Color
Black
n/a

Movement

2 specs
Caliber
Hamilton H-31
Valjoux 7750
Power Reserve
60h
12h

Pricing

1 specs
MSRP
$3,575
$2,200
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Reviews

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

Hamilton Khaki Aviation Takeoff Auto Chrono

The Hamilton Khaki Aviation Takeoff Auto Chrono is noted for its distinctive bullhead chronograph design and large 46mm case, featuring a PVD finish and yellow accents. Owners praise its solid construction, precise indices, and smooth bezel action, with some highlighting the detailed champagne dial, crisp printing, and retro hands with good lume. However, its extreme thickness and sizable crown guards are flagged as potentially compromising day-to-day wearability, and one owner criticizes the seconds hand as "tacky." The watch's unique detachable design for a desktop display case and its ability to be mounted on a cockpit dash are seen as novelties for collectors. It uses the Hamilton H-31 automatic chronograph movement. On balance, owners and reviewers appreciate the Hamilton Khaki Aviation Takeoff Auto Chrono for its unique design and pilot-inspired legibility, despite some concerns about its practicality for daily wear.

LIV Watches P-51

Owners widely praise the LIV Watches P-51 for its excellent build quality, attention to detail, and striking pilot design, with many noting that images fail to capture its full appeal. Reviewers highlight its legibility, aided by BGW9 lume and an anti-reflective crystal, and its robust construction, including titanium and matte ceramic options. One owner notes the Valjoux 7750 movement is regulated to within +/- 4 seconds per day. However, one owner expresses concern about lume performance, referencing past discussions about LIV watches, and prices range from $550 to $1931 AUD depending on the specific model and variant. Overall, owners and reviewers rate the LIV Watches P-51 highly for its distinctive design and solid construction at its price point.

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