Side by side

Nivada Grenchen Chronoking MecaquartzvsYema Flygraf Bi-Compax French Air Force

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

Chronoking Mecaquartz
Nivada GrenchenChronoking Mecaquartz
MSRP $610
Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

10 of 29 specs differ
Diameter
Chronoking Mecaquartz38mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
Chronoking Mecaquartz40h
Flygraf Bi-Compax French Air Force40h
Water Resistance
Chronoking Mecaquartz100m
Flygraf Bi-Compax French Air Force100m
MSRP
Chronoking Mecaquartz$610
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

6 specs
Diameter
38mm
40mm
Thickness
13.4mm
9.5mm
Lug-to-Lug
46mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed + Polished
Brushed and polished
Caseback
316L Steel Silver Color Caseback
Solid

Crystal & Dial

1 specs
Dial Color
Silver Vertical Brushed dial, Applied indexes w/ White Super Luminous, Semi-Glossy White inner ring w/ Black Super Luminous dots.
Black

Movement

2 specs
Caliber
Seiko VK64
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$610
$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.

Nivada Grenchen Chronoking Mecaquartz

Owners widely praise the Nivada Grenchen Chronoking Mecaquartz for its versatile 38mm size, retro racing design, and excellent finishing for its price point. The reliable Seiko mecaquartz movement is frequently highlighted, as is the watch's 100M water resistance and extensive Super-LumiNova for legibility. Some owners appreciate the 12:00 date window and the satisfying mechanical-feeling chronograph reset. However, one owner found the 38mm case too small for their wrist. The Nivada Grenchen Chronoking Mecaquartz is available starting at $479. Overall, owners rate the Nivada Grenchen Chronoking Mecaquartz highly for its vintage aesthetic and robust build at an accessible price.

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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