Side by side

Hamilton Khaki Aviation Pilot Pioneer Mechanical ChronovsNOMOS Glashütte Tetra 27 duo

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

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.

NOMOS Glashütte Tetra 27 duo

Owners widely praise the NOMOS Glashütte Tetra 27 duo for its ideal small and light wearing dimensions, beautiful dial that shifts with lighting, and gorgeous blued hands, with some finding its 27mm size perfect for vintage preferences. The watch is noted for its precise, Art Deco-inspired design and good finishing. However, some owners and reviewers consider the 27.5mm size too small, labeling it a women's watch, though others find it unisex and note its square shape can make it wear larger. One owner flags the buckle as disappointingly generic and the grey suede strap as prone to getting dirty. Overall, owners and reviewers highly regard the NOMOS Glashütte Tetra 27 duo for its elegant design and comfortable wearability at its price point.

At a glance

17 of 29 specs differ
Diameter
Khaki Aviation Pilot Pioneer Mechanical Chrono40mm
Tetra 27 duo27.5mm
Power Reserve
Khaki Aviation Pilot Pioneer Mechanical Chrono60h
Tetra 27 duo53 hoursh
Water Resistance
Khaki Aviation Pilot Pioneer Mechanical Chrono100m
Tetra 27 duo50m
MSRP
Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445
Tetra 27 duo$2,090

Full specifications

Case

8 specs
Category
Pilot
Dress
Diameter
40mm
27.5mm
Thickness
14.35mm
6.1mm
Lug-to-Lug
50mm
38.5mm
Lug Width
22mm
18mm
Finish
Brushed and polished
Water Resistance
100m
50m
Caseback
Solid

Crystal & Dial

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

Movement

4 specs
Caliber
H-51-Si
DUW 4001
Beat Rate
28,800 vph
21,600 vph
Power Reserve
60h
53 hoursh
Jewels
25
17

Pricing

1 specs
MSRP
$2,445
$2,090
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