Side by side

Hamilton Khaki Field King AutovsFormex Reef 42 mm

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

Khaki Field King Auto
HamiltonKhaki Field King Auto
MSRP $845
Reef 42 mm
FormexReef 42 mm
MSRP $2,414

At a glance

10 of 29 specs differ
Diameter
Khaki Field King Auto40mm
Reef 42 mm42mm
Power Reserve
Khaki Field King Auto80h
Reef 42 mm56h
Water Resistance
Khaki Field King Auto50m
Reef 42 mm300m
MSRP
Khaki Field King Auto$845
Reef 42 mm$2,414

Full specifications

Case

6 specs
Category
Field
Diver
Diameter
40mm
42mm
Thickness
11.15mm
11.4mm
Lug-to-Lug
46mm
47mm
Lug Width
20mm
22mm
Water Resistance
50m
300m

Crystal & Dial

1 specs
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
H-40
Sellita SW300-1
Power Reserve
80h
56h

Pricing

1 specs
MSRP
$845
$2,414

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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 Field King Auto

Owners and reviewers widely praise the Hamilton Khaki Field King Auto for its 80-hour power reserve, hacking capability, and snappy day-date function, with accuracy figures ranging from +1 to +5 seconds per day. The watch is also noted for its legibility, attractive dial options, and 100m water resistance. Some owners find the stock strap stiff and the case finishing lacks fine detail, while others mention the lume is decent but fades significantly after about 30 minutes. The lack of an anti-reflective coating on the sapphire crystal is a recurring point, and the crown does not feel like it fully pushes in for some. On balance, owners and reviewers rate the Hamilton Khaki Field King Auto highly for its robust feature set and value, particularly its day-date complication and extended power reserve.

From video reviewers

The 80-hour power reserve from the H-40 movement is a significant advantage. The lack of AR coating on the sapphire crystal hinders legibility in direct light, and the 50-meter water resistance is limited for a field watch. Reviewers disagreed on the watch case geometry and ergonomics, with one noting it contributed to buyer's remorse and another suggesting it should offer a comfortable fit.

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.

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