Which is cheaper, the Hamilton Khaki Field King Day-Date or the Formex Reef 42 mm?

At MSRP the Hamilton Khaki Field King Day-Date is the cheaper of the two at $845, against $2,414 for the Formex Reef 42 mm — a $1,569 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Field King Day-Date or the Formex Reef 42 mm?

The Formex Reef 42 mm wears larger at 42mm versus 40mm for the Hamilton Khaki Field King Day-Date — a 2mm difference across the dial.

Which has better water resistance, the Hamilton Khaki Field King Day-Date or the Formex Reef 42 mm?

The Formex Reef 42 mm is rated to 300m versus 100m for the Hamilton Khaki Field King Day-Date.

Which has a longer power reserve, the Hamilton Khaki Field King Day-Date or the Formex Reef 42 mm?

The Hamilton Khaki Field King Day-Date carries a 80-hour power reserve against 56 hours on the Formex Reef 42 mm.

What movement does the Hamilton Khaki Field King Day-Date run compared to the Formex Reef 42 mm?

Both watches run automatic movements — the Hamilton Khaki Field King Day-Date uses the H-40 and the Formex Reef 42 mm uses the Sellita SW300-1.

Side by side

Hamilton Khaki Field King Day-DatevsFormex Reef 42 mm

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

Hamilton Khaki Field King Day-Date

h64475131

MSRP $845

Formex Reef 42 mm

reef-42mm-automatic-cosc-300m-black

MSRP $2,414

At a glance

10 of 29 specs differ

Diameter

Khaki Field King Day-Date40mm

Reef 42 mm42mm

Power Reserve

Khaki Field King Day-Date80h

Reef 42 mm56h

Water Resistance

Khaki Field King Day-Date100m

Reef 42 mm300m

MSRP

Khaki Field King Day-Date$845

Reef 42 mm$2,414

Full specifications

Case

6 specs

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 Day-Date

Hamilton Khaki Field King Day-Date owners widely praise its classic styling, 80-hour power reserve, and excellent value. Opinions on water resistance are split; some express concern over the 50m rating, while others find it sufficient for daily wear and swimming. One owner notes the stock strap can be stiff. Service costs range from $55 for routine maintenance to $220 for full service with movement replacement. On balance, owners rate the Hamilton Khaki Field King Day-Date highly for its classic aesthetics and impressive power reserve at its price point.

From video reviewers

The 80-hour power reserve from the H-40 automatic movement is a significant strength. The 50-meter water resistance is considered a limitation for a field watch.

Reddit·2

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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