Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsLongines SPIRIT PILOT

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

SPIRIT PILOT
LonginesSPIRIT PILOT
MSRP $3,100

At a glance

20 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
SPIRIT PILOT39mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
SPIRIT PILOT72h
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
SPIRIT PILOT100m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
SPIRIT PILOT$3,100

Full specifications

Case

6 specs
Diameter
40mm
39mm
Thickness
14.35mm
11.5mm
Lug-to-Lug
50mm
47.2mm
Lug Width
22mm
20mm
Finish
Brushed and polished
Caseback
Solid
Screw-down case back

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Blue
Black
Indices
Applied
Applied Arabic numerals
Lume
None
Super-LumiNova

Movement

8 specs
Caliber
H-51-Si
L888.4
Type
Manual
Automatic
Beat Rate
28,800 vph
25,200 vph
Power Reserve
60h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds

Pricing

1 specs
MSRP
$2,445
$3,100

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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.

Longines SPIRIT PILOT

Owners widely praise the Longines Spirit Pilot for its exceptional finishing, featuring sharp edges and crisp transitions, and its improved wearability thanks to a reduced 39mm case size and 47.2mm lug-to-lug distance. Reviewers and owners alike highlight the clean, balanced dial with gilt-toned accents that play with light, and its excellent legibility and lume. The L888.4 automatic movement is noted for its 72-hour power reserve and COSC certification. Some owners feel the Longines Spirit Pilot wears larger than its 39mm diameter and express disappointment over the removal of the five stars from the dial, while others find its bracelet endlinks long and lament the lack of quick-release. One owner voices concern over the serviceability of exclusive movements. Overall, owners rate the Longines Spirit Pilot highly for its modern icon status and value, feeling it wears more expensively than its price point suggests.

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