Side by side

Bremont Altitude ChronographvsYema Flygraf Bi-Compax French Air Force

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

Altitude Chronograph
BremontAltitude Chronograph
MSRP $6,300
Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

8 of 29 specs differ
Diameter
Altitude Chronograph42mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
Altitude Chronograph40h
Flygraf Bi-Compax French Air Force40h
Water Resistance
Altitude Chronograph100m
Flygraf Bi-Compax French Air Force100m
MSRP
Altitude Chronograph$6,300
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

4 specs
Diameter
42mm
40mm
Thickness
14.7mm
9.5mm
Lug Width
14.7mm
20mm
Material
316L Stainless Steel (DLC coated)
316L Stainless Steel

Crystal & Dial

1 specs
Dial Color
Silver
Black

Movement

2 specs
Caliber
BE-50AE
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$6,300
$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.

Bremont Altitude Chronograph

Owners note faint marks on the case sides and back, with minor wear and creasing on the strap. Reviewers flag the "DANGER EJECTION SEAT" wordmark on the dial as a divisive design choice that disrupts the MB series' usual stark tone, though they praise the improved smoothness and click precision of the Roto Click rotating bezel. On balance, the Bremont Altitude Chronograph elicits mixed reactions, with design elements like the dial text being a point of contention for reviewers.

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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