Certina DS Super PH500MvsSeiko Prospex Sea

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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.

DS Super PH500M

Prospex Sea
Diameter
43mm
43.8mm
Lug-to-Lug
48.2mm
lowest
48.7mm
Thickness
14.9mm
12.8mm
lowest
Water Resistance
500m
highest
200m
Power Reserve
80h
highest
41h
MSRP
$1,107
$625
lowest
Movement
POWERMATIC 80.611
Seiko 4R35
Case
5 specsCrystal & Dial
2 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Certina DS Super PH500M for its retro dive watch aesthetic, good legibility, and value, with many highlighting its striking orange dial and secure bezel lock. The Powermatic 80.611 movement is reported as consistent and accurate, with one owner noting +2/+3 seconds per day performance. The watch is considered tough and offers good specifications for its price. However, some find the 43mm case and 15mm thickness substantial, potentially wearing large on smaller wrists, and one reviewer notes the crystal retaining ring can be a scratch magnet. Overall, owners and reviewers rate the Certina DS Super PH500M highly for its vintage-inspired design and excellent value proposition.
The Seiko Prospex Sea is widely praised for its excellent value as a sport watch, with owners highlighting its comfortable wearability and generous lume. Reviewers note its solid build quality and attractive design, with some specifically mentioning the matte black dial as a strong point. One owner reports accuracy around +1 to +2 seconds per day. The 43.8mm case size is considered substantial by some, and one owner found the watch heavy and thick, regretting not choosing a different variant. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its blend of classic design and modern utility at an accessible price point.
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