Side by side

Hamilton Khaki Aviation X-Wind Auto chronovsFormex Reef 42 mm

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 X-Wind Auto chrono

Owners widely praise the Hamilton Khaki Aviation X-Wind Auto chrono for its good quality for the price and versatility with straps. Reviewers highlight its unique drift angle calculator function as a horological curio and legitimate navigational tool, noting its modified Valjoux 7750 movement provides a 60-hour power reserve. Some owners find the busy dial and left-handed crown/pusher setup unusual, and its lume could be stronger, while others consider it a heavy travel watch with features not useful for everyday use. On balance, owners and reviewers rate the Hamilton Khaki Aviation X-Wind Auto chrono highly for its functionality and build quality at its price point.

Formex Reef 42 mm

The Formex Reef 42 mm is widely praised for its comfortable bracelet featuring a micro-adjust clasp, COSC-certified Sellita movement, and excellent build quality. Owners appreciate the gradient dial's visual appeal and the overall wearability. Some owners note the seconds hand does not perfectly align with markers, and one owner found the lugs' taper hinders third-party strap fit. The bracelet's length and sporty design are noted as limiting versatility by some. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its impressive wearability and value at the price point.

At a glance

10 of 29 specs differ
Diameter
Khaki Aviation X-Wind Auto chrono44mm
Reef 42 mm42mm
Power Reserve
Khaki Aviation X-Wind Auto chrono60h
Reef 42 mm56h
Water Resistance
Khaki Aviation X-Wind Auto chrono100m
Reef 42 mm300m
MSRP
Khaki Aviation X-Wind Auto chrono$2,095
Reef 42 mm$2,414

Full specifications

Case

5 specs
Category
Pilot
Diver
Diameter
44mm
42mm
Thickness
15.6mm
11.4mm
Lug-to-Lug
55mm
47mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
Dial Color
Blue
Black
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
H-21
Sellita SW300-1
Power Reserve
60h
56h

Pricing

1 specs
MSRP
$2,095
$2,414
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