Side by side

Praesidus A-11 Spec 2 AmeriquartzvsYema Flygraf Bi-Compax French Air Force

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

A-11 Spec 2 Ameriquartz
PraesidusA-11 Spec 2 Ameriquartz
MSRP $215
Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

8 of 29 specs differ
Diameter
A-11 Spec 2 Ameriquartz38mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
A-11 Spec 2 Ameriquartz40h
Flygraf Bi-Compax French Air Force40h
Water Resistance
A-11 Spec 2 Ameriquartz50m
Flygraf Bi-Compax French Air Force100m
MSRP
A-11 Spec 2 Ameriquartz$215
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

5 specs
Category
Field
Chronograph
Diameter
38mm
40mm
Thickness
9.5mm
Lug Width
18mm
20mm
Water Resistance
50m
100m

Crystal & Dial

1 specs
Dial Color
Brown
Black

Movement

1 specs
Caliber
Ameriquartz USA

Pricing

1 specs
MSRP
$215
$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.

Praesidus A-11 Spec 2 Ameriquartz

Owners praise the Praesidus A-11 Spec 2 Ameriquartz as a sturdy, versatile tool watch at $215 USD, noting its precise Ameriquartz movement. However, some owners report unpolished lugs, random timekeeping errors ranging from 5-15 minutes off, premature battery death, and difficulties with battery replacements and customer service. The canvas strap is also noted as being very long, and the crystal is sapphire-coated K1 mineral. On balance, owners find the Praesidus A-11 Spec 2 Ameriquartz a capable daily beater despite these specific concerns.

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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