Side by side

Hamilton American Classic Boulton QuartzvsYema Flygraf Bi-Compax French Air Force

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

American Classic Boulton Quartz
HamiltonAmerican Classic Boulton Quartz
MSRP $845
Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

11 of 29 specs differ
Diameter
American Classic Boulton Quartz27mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
American Classic Boulton Quartz40h
Flygraf Bi-Compax French Air Force40h
Water Resistance
American Classic Boulton Quartz30m
Flygraf Bi-Compax French Air Force100m
MSRP
American Classic Boulton Quartz$845
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

7 specs
Category
Dress
Chronograph
Diameter
27mm
40mm
Thickness
7.8mm
9.5mm
Lug-to-Lug
46mm
Lug Width
18mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
30m
100m

Crystal & Dial

2 specs
Crystal
Mineral
Sapphire
Dial Color
White
Black

Movement

1 specs
Caliber
980.163

Pricing

1 specs
MSRP
$845
$490

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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 Boulton Quartz

Owners praise the Hamilton American Classic Boulton Quartz for its classy, formal aesthetic, historical inspiration, and Art Deco design, noting its sinuous case hugs the wrist and contributes to a premium feel. Some find its small and thin size perfect, with one owner highlighting the 27mm x 32mm dimensions. The blue OEM strap was considered low quality, prompting an immediate swap. The retail price of $695 is considered worthwhile for the design and reliable movement by some, while others find it expensive for a quartz watch. Overall, owners rate the Hamilton American Classic Boulton Quartz highly for its heritage styling and elegant design at its price point.

Yema Flygraf Bi-Compax French Air Force

Owners widely praise the Yema Flygraf Bi-Compax French Air Force for its attractive, toolish aesthetic and excellent quality for the price, noting the legible Type A dial and 40mm titanium case. However, the acrylic crystal scratches easily, and the titanium case is prone to marking. The mecha-quartz movement's chrono timer sweeps rather than ticks, and one owner questions the purpose of the oversized crown. The in-house Yema 2000 movement is accurate at +/- 10 seconds per day but has a 42-hour power reserve, and some owners express concerns regarding Yema's past quality control and customer service. On balance, owners rate the Yema Flygraf Bi-Compax French Air Force highly for its attractive design and value, despite concerns about material durability and brand service history.

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