Aerotec Watches Aerotec Ace X GMT DivervsSeiko Prospex Sea PADI Special Edition
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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.

Aerotec Ace X GMT Diver

Prospex Sea PADI Special Edition
Diameter
41.5mm
41.7mm
Lug-to-Lug
n/a
49.5mm
Thickness
n/a
12.3mm
Water Resistance
200m
200m
Power Reserve
n/a
41h
MSRP
$459
lowest
$650
Movement
Seiko NH34
Seiko 4R35
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 Aerotec Ace X GMT Diver is praised for its excellent timekeeping from the Seiko NH34 movement, with one owner reporting immaculate condition after minimal wear. The watch features a 41.5mm case and 200m water resistance. Overall, owners rate the Aerotec Ace X GMT Diver highly for its reliable Seiko NH34 movement and solid build quality.
Owners widely praise the Seiko Prospex Sea PADI Special Edition for its value, attractive PADI color scheme, and excellent lume. Reviewers highlight its proven design, strong functionality, and classic Seiko diver charm, with a matte black dial and large markers being a common point of appreciation. The bezel action is noted as being smoother and more precise than previous models, and the build quality is described as amazing. Some owners find the dial's wave pattern a favorite, though it may not stand out without direct light. The movement's stated accuracy range is +45 to -35 seconds per day, and the divers extension is a point of disappointment for some due to difficulty in opening. The bracelet adjustment is also noted as a pain point, though manageable. Overall, owners and reviewers rate the Seiko Prospex Sea PADI Special Edition highly for its exceptional value and classic diver aesthetic.
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