Phoibos Apollo TitaniumvsSeiko 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.

Apollo Titanium

Prospex Sea
Diameter
41mm
43.8mm
Lug-to-Lug
48mm
lowest
48.7mm
Thickness
12.5mm
lowest
12.8mm
Water Resistance
300m
highest
200m
Power Reserve
n/a
41h
MSRP
$575
lowest
$625
Movement
Miyota 9015
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 Phoibos Apollo Titanium is described as beautiful and unique by owners. Some owners note small marks appearing on the case, bracelet, bezel, and case back, though the watch is otherwise reported to be in very good condition. Overall, owners appreciate the Phoibos Apollo Titanium for its aesthetic appeal and unique design.
The full titanium build is a notable strength. The spring bar placement, initially an issue for strap changes, has been addressed by Phoibos.
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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