Aigi Watches Royal Danish Air ForcevsSeiko 5KX
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Royal Danish Air Force

5KX
Diameter
40mm
42.5mm
Lug-to-Lug
n/a
46mm
Thickness
11.3mm
lowest
13.4mm
Water Resistance
200m
highest
100m
Power Reserve
n/a
41h
MSRP
$858
$350
lowest
Movement
Sellita SW200-1
Seiko 4R36
Case
5 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Aigi Royal Danish Air Force is appreciated for its unique antenna dome dial, which one owner finds thematically linked to the seconds hand and evocative of looking out an airplane window. Owners note its on-paper specifications and value for the price. However, some find its 43mm case size and 49mm lug-to-lug measurement chunky, and there is uncertainty about Aigi's quality due to a lack of online reviews and videos. On balance, owners rate the Aigi Royal Danish Air Force as a decent option for its price, primarily due to its unique dial design.
Owners widely praise the Seiko 5KX for its strong lume and value, with many reporting accuracy within +/-5 to 10 seconds per day, though some experience +/-1 second. The 42.5mm case is noted to wear smaller, and the watch offers a comfortable feel for many. Some owners are split on the bracelet quality, with opinions ranging from "cheaper side" with hollow links to "flimsy-feeling" jubilee. A few quality control issues have been reported, including a failed bezel clickspring and misaligned components. The Seiko 5KX is seen by some as a worthy successor to the original SKX, offering an upgraded movement with hacking and hand-winding capabilities, though others lament the loss of ISO certification and a screw-down crown. Overall, owners rate the Seiko 5KX highly for its excellent lume and value proposition, making it a popular choice for everyday wear.
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