Grand Seiko SBGH289vsSeagull Ocean Series Ultra 1000m Waterproof Helium Valve Design Integrated Rotating Bezel Diving 45mm
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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.

SBGH289

Ocean Series Ultra 1000m Waterproof Helium Valve Design Integrated Rotating Bezel Diving 45mm
Diameter
43.8mm
45mm
Lug-to-Lug
51mm
50mm
lowest
Thickness
14.7mm
lowest
15.8mm
Water Resistance
200m
1000m
highest
Power Reserve
55h
n/a
MSRP
$7,700
$875
lowest
Movement
Grand Seiko 9S85
Seagull ST2130
Case
4 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Grand Seiko SBGH289 owners and reviewers praise its legible blue dial, strong Lumibrite, and the smooth sweep of its Hi-Beat Caliber 9S85 movement. The watch's steel case is noted for its comfortable wearability despite its 43.8mm size, and it features Grand Seiko's Super-Hard Coating for scratch resistance. Accuracy is reported within +8/-1 seconds per day. Overall, owners and reviewers rate the Grand Seiko SBGH289 highly for its blend of legibility, comfortable wear, and the precise, smooth-sweeping high-beat movement.
Excellent finishing and smooth bezel action are notable features of the Grand Seiko SBGH289. A weakness of the watch is the relatively low lume brightness. Reviewers disagree on the watch's ideal lug width, with some considering 22mm a limitation for users who prefer a more standard 20mm or 21mm strap width, while others do not mention this as a concern.
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.
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