Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsSternglas Naos Pro Automatik

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

Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755
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.

Sternglas Naos Pro Automatik

The Sternglas Naos Pro Automatik is praised for its slim 9mm case and Bauhaus dial design, featuring clear hour markers and a framed date window. Owners note the upgraded Miyota 9015 movement with a 4Hz beat rate. Accuracy is reported as -10/+30 seconds per day, which is not ideal for precision enthusiasts. The five-link bracelet's lack of fitted end-links and the optional bracelet's chunkiness are flagged as areas lacking refinement. Overall, reviewers highlight the Sternglas Naos Pro Automatik's improved wearability and premium feel at its price point.

From video reviewers

The Bauhaus design is a strength. The value proposition is a weakness.

At a glance

13 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Naos Pro Automatik38mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Naos Pro Automatik42h
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
Naos Pro Automatik50m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
Naos Pro Automatik$755

Full specifications

Case

6 specs
Category
Pilot
Dress
Diameter
40mm
38mm
Thickness
14.35mm
9mm
Lug-to-Lug
50mm
42.4mm
Lug Width
22mm
20mm
Water Resistance
100m
50m

Crystal & Dial

2 specs
Dial Color
Blue
Lume
None
Luminova Punkte

Movement

4 specs
Caliber
H-51-Si
Miyota 9015
Type
Manual
Automatic
Power Reserve
60h
42h
Jewels
25

Pricing

1 specs
MSRP
$2,445
$755
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