Side by side

Hamilton American Classic Valiant AutovsFormex Reef 39.5 mm

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

American Classic Valiant Auto
HamiltonAmerican Classic Valiant Auto
MSRP $645
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

11 of 29 specs differ
Diameter
American Classic Valiant Auto34mm
Reef 39.5 mm39.5mm
Power Reserve
American Classic Valiant Auto80h
Reef 39.5 mm56h
Water Resistance
American Classic Valiant Auto50m
Reef 39.5 mm300m
MSRP
American Classic Valiant Auto$645
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
34mm
39.5mm
Thickness
10.58mm
11mm
Lug-to-Lug
46mm
45.5mm
Lug Width
16mm
22mm
Water Resistance
50m
300m

Crystal & Dial

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

Movement

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

Pricing

1 specs
MSRP
$645
$2,230

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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 American Classic Valiant Auto

Owners widely praise the Hamilton American Classic Valiant Auto for its classic design elements, such as the sunburst dial and Roman numerals, noting its suitability for everyday elegance and wearability under a cuff. One owner highlights the 39.5mm size and applied indices as a "hidden gem," while another appreciates the clean, simple design with thin Roman numerals. The watch is also commended for its comfortable bracelet and attractive lance hands, with confirmation that the bracelet is indeed changeable. Some owners note the date window's placement at three o'clock is a point of contention, and one owner reports the watch runs at approximately +6 seconds per day after ten years of intermittent use. On balance, owners rate the Hamilton American Classic Valiant Auto highly for its elegant, classic design and comfortable wearability at its price point.

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.

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