Seagull Ocean Series Ultra 1000m Waterproof Helium Valve Design Integrated Rotating Bezel Diving 45mmvsSeiko Purchase Prospex
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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.

Ocean Series Ultra 1000m Waterproof Helium Valve Design Integrated Rotating Bezel Diving 45mm

Purchase Prospex
Diameter
45mm
45mm
Lug-to-Lug
50mm
47.7mm
lowest
Thickness
15.8mm
13.2mm
lowest
Water Resistance
1000m
highest
200m
Power Reserve
n/a
41h
MSRP
$875
$755
lowest
Movement
Seagull ST2130
Seiko 4R36
Case
4 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Seagull Ocean Series Ultra 1000m Waterproof Helium Valve Design Integrated Rotating Bezel Diving Watch 45mm is praised for its fit, finish, and general quality, with one owner comparing it favorably to a Movado Series 800. Reviewers note a well-executed design, a metallic wave pattern on the dial with a blue-to-black gradient, and a domed sapphire bezel as desirable elements. One owner reports the ST2130 movement runs at +3 seconds per day. The watch features a bead-blasted 316L stainless steel case, a 5mm sapphire crystal, and a helium escape valve. Some owners find the 45mm case large but fitting, while others note a 20mm thickness. A reviewer flags excessive text on the dial and case, uneven luminous material application, and a rotating bezel with a slight rattle. One owner notes bezel fading over 5 years of commercial diving. The community is split on the bezel, with some calling the 60-click unidirectional bezel a minor quirk and another mentioning a 12-hour bezel.
Owners widely praise the beauty of the Seiko Prospex HBB002K1. Some owners question the value proposition at its $750 limited-edition price point, citing the use of a budget movement when Seiko offers newer 6R series calibers. On balance, owners find the Seiko Prospex HBB002K1 beautiful, though some express reservations about its value given the movement choice.
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