Side by side

Hamilton Jazzmaster Slim AutovsFormex Reef 42 mm

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

Jazzmaster Slim Auto
HamiltonJazzmaster Slim Auto
MSRP $825
Reef 42 mm
FormexReef 42 mm
MSRP $2,414

At a glance

9 of 29 specs differ
Diameter
Jazzmaster Slim Auto40mm
Reef 42 mm42mm
Power Reserve
Jazzmaster Slim Auto50h
Reef 42 mm56h
Water Resistance
Jazzmaster Slim Auto30m
Reef 42 mm300m
MSRP
Jazzmaster Slim Auto$825
Reef 42 mm$2,414

Full specifications

Case

5 specs
Category
Dress
Diver
Diameter
40mm
42mm
Thickness
8.35mm
11.4mm
Lug-to-Lug
46mm
47mm
Water Resistance
30m
300m

Crystal & Dial

1 specs
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
No caliber
Sellita SW300-1
Power Reserve
50h
56h

Pricing

1 specs
MSRP
$825
$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 Jazzmaster Slim Auto

The Hamilton Jazzmaster Slim Auto is praised for its elegance, light weight, and impressive leather strap, offering a classy yet engaging aesthetic. Its thin 8mm profile, achieved partly by omitting a seconds hand and utilizing the ETA 2892 movement, contributes to its wearability. However, one owner notes the 44mm case size as being very large, and another finds it less appealing than vintage Hamilton models, though the black dial version is considered better looking. Overall, owners appreciate the Hamilton Jazzmaster Slim Auto for its slim profile and elegant design.

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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