Aigi Watches Royal Danish Air ForcevsSeiko Prospex Sea
The measurements
Sized up.
Catalogue photos are all shot at the same flattering size. These aren't: every case below shares one millimetre scale.

Royal Danish Air Force

Prospex Sea
Diameter
40mm
43.5mm
Lug-to-Lug
n/a
51mm
Thickness
11.3mm
lowest
13.3mm
Water Resistance
200m
200m
Power Reserve
n/a
70h
MSRP
$858
lowest
$1,500
Movement
Sellita SW200-1
Seiko 6R35
Case
5 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsWhat people say
Owners + reviewers, side by side.
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.
Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.
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