Side by side

Massena LAB GeometervsHamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

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

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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.

Massena LAB Geometer

Massena LAB is lauded for its vintage-inspired designs, with reviewers highlighting the attractive sector dial and glossy black dial with gilt printing. The manual-winding SW510 Elaboré movement is noted, and the 39mm case is described as polished stainless steel. Some find the minute and hour hands difficult to distinguish, and one reviewer criticized the dial for only displaying Massena's name. The price points mentioned range from $5,995 to $8,675. Overall, reviewers rate Massena LAB highly for its vintage aesthetics and value, particularly noting the striking dials and modern horological touches.

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.

From video reviewers

The vintage-inspired design referencing a 1970s RAF model is a shared strength. Reviewers did not reach a consensus on any weaknesses or specific points of disagreement.

At a glance

15 of 29 specs differ
Diameter
Geometer39mm
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Power Reserve
Geometer58h
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Water Resistance
Geometer50m
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
MSRP
Geometer$3,495
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445

Full specifications

Case

6 specs
Category
Chronograph
Pilot
Diameter
39mm
40mm
Thickness
9mm
14.35mm
Lug-to-Lug
0mm
50mm
Lug Width
0mm
22mm
Water Resistance
50m
100m

Crystal & Dial

5 specs
Crystal
Acrylic
Sapphire
Crystal Shape
Domed
AR Coating
No
Dial Color
Brown
Blue
Lume
Cream
None

Movement

3 specs
Caliber
Sellita SW510
Hamilton H-51
Power Reserve
58h
60h
Jewels
23
0

Pricing

1 specs
MSRP
$3,495
$2,445
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