Side by side

Hamilton Khaki Aviation Takeoff Auto ChronovsYema Wristmaster Slim Small Seconds CMM.29

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

Khaki Aviation Takeoff Auto Chrono
HamiltonKhaki Aviation Takeoff Auto Chrono
MSRP $3,575
Wristmaster Slim Small Seconds CMM.29
YemaWristmaster Slim Small Seconds CMM.29
MSRP $2,249

At a glance

9 of 29 specs differ
Diameter
Khaki Aviation Takeoff Auto Chrono46mm
Wristmaster Slim Small Seconds CMM.2939mm
Power Reserve
Khaki Aviation Takeoff Auto Chrono60h
Wristmaster Slim Small Seconds CMM.2940h
Water Resistance
Khaki Aviation Takeoff Auto Chrono50m
Wristmaster Slim Small Seconds CMM.29100m
MSRP
Khaki Aviation Takeoff Auto Chrono$3,575
Wristmaster Slim Small Seconds CMM.29$2,249

Full specifications

Case

6 specs
Category
Pilot
Dress
Diameter
46mm
39mm
Thickness
16.2mm
9mm
Lug-to-Lug
46mm
Lug Width
22mm
20mm
Water Resistance
50m
100m

Movement

2 specs
Caliber
H-31
Yema CMM.29
Power Reserve
60h
40h

Pricing

1 specs
MSRP
$3,575
$2,249

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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 Takeoff Auto Chrono

The Hamilton Khaki Aviation Takeoff Auto Chrono is noted for its unique bullhead chronograph design and detachable functionality for desktop display, with a PVD case and yellow accents. Owners praise its solid construction, precise indices, and smooth bezel action, alongside a detailed champagne dial, crisp printing, and retro hands with good lume. However, its extreme thickness and 46.3mm width are flagged as compromising daily wearability, and some find the sizable crown guards hinder usability, while a rattling bracelet with a difficult-to-remove design is also mentioned. The watch uses the Hamilton H-31 automatic chronograph movement with a 60-hour power reserve and is a limited edition of 1999 units. On balance, owners and reviewers appreciate the Hamilton Khaki Aviation Takeoff Auto Chrono for its distinctive design and pilot-inspired legibility, despite practical concerns regarding its size and wearability.

Yema Wristmaster Slim Small Seconds CMM.29

Owners widely praise the Yema Wristmaster Slim Small Seconds CMM.29 for its slim 9.5mm case, unique nature-inspired dial, and brushed steel finish. The micro-rotor movement is noted for its 4Hz beat rate and 42-hour power reserve, regulated to -/+ 10 seconds per day. Some owners report concerns regarding the movement and warranty process, while a reviewer questioned the value proposition at its price point and noted minor finishing inconsistencies on a prototype. On balance, the Yema Wristmaster Slim Small Seconds CMM.29 is highly regarded by owners for its distinctive design and comfortable wearability.

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