Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsSpinnaker Fleuss GMT

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

Fleuss GMT
SpinnakerFleuss GMT
MSRP $299

At a glance

10 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Fleuss GMT43mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Fleuss GMT40h
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
Fleuss GMT150m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
Fleuss GMT$299

Full specifications

Case

6 specs
Category
Pilot
GMT
Diameter
40mm
43mm
Thickness
14.35mm
13mm
Lug-to-Lug
50mm
51mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
150m

Movement

3 specs
Caliber
H-51-Si
Seiko NH34A
Type
Manual
Automatic
Power Reserve
60h
40h

Pricing

1 specs
MSRP
$2,445
$299

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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.

Spinnaker Fleuss GMT

Owners widely praise the Spinnaker Fleuss GMT for its aesthetic appeal, comfortable and light wearability, and value, especially when discounted. The textured blue dial, applied lumed markers, and sapphire crystal with AR coating are highlighted as stunning features. Owners also note the dial is very well lumed and the bracelet has helpful quick-release tabs. However, the 43.3mm case size is criticized by some as being too large, and the Beads of Rice bracelet is described as "jingly jangly" with a pressed clasp and a clasp that isn't finely finished. Some users flag the internal bezel rotates too easily. Overall, owners rate the Spinnaker Fleuss GMT highly for its aesthetic success and value at its affordable price point.

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