Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsLongines MASTER COLLECTION

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

MASTER COLLECTION
LonginesMASTER COLLECTION
MSRP $2,650
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 MASTER COLLECTION

Owners widely praise the Longines Master Collection for its excellent finishing, classic styling, and value proposition, with specific call-outs for beautiful dials, Breguet numerals, and complications like moon phases and annual calendars. Reviewers and owners alike highlight the attractive price point for a Swiss-made timepiece featuring these elements. Some owners note the bracelet lacks sufficient micro-adjustment for a perfect fit, and one reviewer found the case finishing somewhat homogenous. A specific chronograph variant's pushers were described as having a cheap feel, and its hour counter did not always reset to zero, while another variant's subdial obscured a numeral. Water resistance is noted as 30m for one model, considered light by a reviewer. Overall, owners rate the Longines Master Collection highly for its dial aesthetics and the value it offers in complications and finishing.

At a glance

20 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
MASTER COLLECTION29mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
MASTER COLLECTION72h
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
MASTER COLLECTION30m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
MASTER COLLECTION$2,650

Full specifications

Case

8 specs
Category
Pilot
Diameter
40mm
29mm
Thickness
14.35mm
9.64mm
Lug-to-Lug
50mm
49.6mm
Lug Width
22mm
21mm
Finish
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Blue
Black
Indices
Applied

Movement

7 specs
Caliber
H-51-Si
L888.5
Type
Manual
Automatic
Beat Rate
28,800 vph
0 vph
Power Reserve
60h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$2,445
$2,650
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