Seiko Prospex SeavsSynchron Ti300M Poseidon Deep Black
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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.
Prospex Sea
Ti300M Poseidon Deep Black
Diameter
41.3mm
41mm
Lug-to-Lug
48.2mm
45mm
lowest
Thickness
12.5mm
11.9mm
lowest
Water Resistance
300m
300m
Power Reserve
72h
highest
60h
MSRP
$1,100
lowest
$1,490
Movement
Seiko 6R55
La Joux-Perret G100
Case
4 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners and reviewers widely praise the Seiko Prospex Sea for its robust build quality and fair price, with many noting its comfortable silicone strap. Some owners find the watch's size, thickness, and weight to be uncomfortable for smaller wrists, while others consider the size perfect. The consensus is that the Seiko Prospex Sea offers excellent value and build quality for its price.
The Synchron Ti300M Poseidon Deep Black is praised for its wearability, attributed to its lightweight titanium construction and a 11.9mm case thickness, making it comfortable even under a cuff. Reviewers note its retro aesthetic and good legibility with a glossy black dial. Owners and reviewers find the La Joux-Perret G100 movement to be a high-grade caliber. The watch is considered a good value, with some sources citing a price around $990-$999. On balance, owners and reviewers rate the Synchron Ti300M Poseidon Deep Black highly for its comfortable titanium build and attractive vintage-inspired design at its price point.
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