Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsLorier Astra Cosmic Blue

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

Astra Cosmic Blue
LorierAstra Cosmic Blue
MSRP $499

At a glance

10 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Astra Cosmic Blue36mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Astra Cosmic Blue40h
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
Astra Cosmic Blue50m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
Astra Cosmic Blue$499

Full specifications

Case

6 specs
Category
Pilot
Field
Diameter
40mm
36mm
Thickness
14.35mm
Lug-to-Lug
50mm
Lug Width
22mm
18mm
Water Resistance
100m
50m

Movement

3 specs
Caliber
H-51-Si
Type
Manual
Automatic
Power Reserve
60h
40h

Pricing

1 specs
MSRP
$2,445
$499

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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 Pioneer Mechanical Chrono

Owners and reviewers widely praise the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono for its authentic military design, attractive dial execution, and intriguing asymmetrical case, with many appreciating its utilitarian feel and vintage vibe. The hand-wound H-51-Si movement, offering a 60-hour power reserve and accuracy around +5 to +7 seconds per day, is also noted positively, as is the satisfying feel of manual winding. Some owners find the 36mm case size light and versatile, while others note it wears larger than its dimensions suggest. However, several sources point to the mineral crystal as a drawback compared to sapphire, and the lume is generally described as weak. The included strap is frequently criticized for being too long and uncomfortable, with many preferring it on a NATO strap. On balance, owners and reviewers rate the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono highly for its compelling vintage military aesthetic and solid value proposition.

Lorier Astra Cosmic Blue

Owners widely praise the Lorier Astra Cosmic Blue for its beautiful, vintage 1960s aesthetic and comfortable 36mm size, fitting well even after initial adjustment. Some community members appreciate its clean lines and attractive design, though a few wish for more variation in the brand's case and bracelet designs across its models. Overall, owners rate the Lorier Astra Cosmic Blue highly for its stunning, dressy vintage appeal and wearability.

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