Side by side

Hamilton American Classic Spirit of Liberty Auto ChronovsYema Flygraf Bi-Compax French Air Force

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

Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

9 of 29 specs differ
Diameter
American Classic Spirit of Liberty Auto Chrono42mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
American Classic Spirit of Liberty Auto Chrono40h
Flygraf Bi-Compax French Air Force40h
Water Resistance
American Classic Spirit of Liberty Auto Chrono50m
Flygraf Bi-Compax French Air Force100m
MSRP
American Classic Spirit of Liberty Auto Chrono$2,225
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

6 specs
Diameter
42mm
40mm
Thickness
14.75mm
9.5mm
Lug-to-Lug
46mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
100m

Movement

2 specs
Caliber
H-21
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$2,225
$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 Spirit of Liberty Auto Chrono

Owners widely praise the Hamilton American Classic Spirit of Liberty Auto Chrono for its impressive craftsmanship, details, and overall finish, noting sharp edges on the mixed brushed and polished lugs that give it a premium look and a refined yet bold presence. The watch offers an improved 60-hour power reserve and increased precision. However, its pushers are noted as being chunky. On balance, owners rate the Hamilton American Classic Spirit of Liberty Auto Chrono highly for its premium finishing and refined presence on the wrist.

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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