Side by side

Seiko 5 Sports SKX seriesvsYema Flygraf Bi-Compax French Air Force

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

5 Sports SKX series
Seiko5 Sports SKX series
MSRP $315
Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

12 of 29 specs differ
Diameter
5 Sports SKX series28mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
5 Sports SKX series40h
Flygraf Bi-Compax French Air Force40h
Water Resistance
5 Sports SKX series100m
Flygraf Bi-Compax French Air Force100m
MSRP
5 Sports SKX series$315
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

6 specs
Category
Sport
Chronograph
Diameter
28mm
40mm
Thickness
11.2mm
9.5mm
Lug-to-Lug
33.1mm
Lug Width
14mm
20mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Crystal
Hardlex
Sapphire
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
2R06
Type
Automatic
Quartz
Jewels
21
25

Pricing

1 specs
MSRP
$315
$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.

Seiko 5 Sports SKX series

Owners widely praise the Seiko 5 Sports SKX series for its iconic dive watch design, robust build, and excellent value, with many appreciating its timeless styling and tool-like character. The movement, while basic, is noted as offering hacking and hand-winding capabilities, and accuracy varies, with many owners reporting +/-5 to 10 seconds per day despite the movement's potential for +/-40 seconds. Some owners find the original SKX models heavier and bulkier than newer iterations, while others critique the lack of a screw-down crown and ISO rating on the newer Seiko 5 Sports SKX series, deeming it less of a serious tool watch. Overall, owners rate the Seiko 5 Sports SKX series highly for its enduring design and value proposition as a robust, everyday watch.

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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