Side by side

Hamilton Khaki Field Pioneer AutomatiquevsFormex Reef 39.5 mm

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

Khaki Field Pioneer Automatique
HamiltonKhaki Field Pioneer Automatique
MSRP $895
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
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 Field Pioneer Automatique

Owners widely report the bracelet quality is a notable drawback for the price, and some find the dial basic and lacking legibility due to the absence of AR coating. However, the Hamilton Khaki Field Pioneer Automatique is praised for its accurate movement featuring an 80-hour power reserve, and its lug-to-lug dimension is noted as near-perfect for smaller wrists. The inclusion of a 24-hour scale is appreciated. Overall, owners find the Hamilton Khaki Field Pioneer Automatique to be just okay for its asking price new, with the movement's performance being a key positive aspect.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

At a glance

11 of 29 specs differ
Diameter
Khaki Field Pioneer Automatique42mm
Reef 39.5 mm39.5mm
Power Reserve
Khaki Field Pioneer Automatique80h
Reef 39.5 mm56h
Water Resistance
Khaki Field Pioneer Automatique100m
Reef 39.5 mm300m
MSRP
Khaki Field Pioneer Automatique$895
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Field
Diver
Diameter
42mm
39.5mm
Thickness
11.7mm
11mm
Lug-to-Lug
46mm
45.5mm
Lug Width
21mm
22mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
Dial Color
Beige
Bahama Blue
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
H-10
Sellita SW300-1
Power Reserve
80h
56h

Pricing

1 specs
MSRP
$895
$2,230
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