Duckworth Prestex Belmont 300 AutomaticvsGrand Seiko SLGB023

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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.

Belmont 300 Automatic

SLGB023
Diameter
42mm
40.8mm
Lug-to-Lug
50mm
48.5mm
lowest
Thickness
13mm
12.9mm
lowest
Water Resistance
300m
300m
Power Reserve
38h
72h
highest
MSRP
$750
lowest
$12,400
Movement
Miyota 9039
Grand Seiko 9RB1
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 find Duckworth Prestex watches interesting and good value, with the Belmont model specifically noted for its wavy dial pattern. Some owners consider the brand's price point ambitious compared to other microbrands. Overall, owners find Duckworth Prestex watches interesting and good value, particularly liking the Belmont model for its wavy dial pattern.
Grand Seiko SLGB023 owners and reviewers widely praise its 40.8mm High-Intensity Titanium case, comfortable wearability, and the striking Ushio tide-inspired blue dial. The Spring Drive 9RB1 movement is celebrated for its exceptional accuracy, rated at ±20 seconds per year. Some owners find the power reserve indicator and hour/minute hand designs less appealing. One reviewer noted the bezel's fully lumed scale as a missed opportunity, while another found the 43.8mm case size (likely referring to a different variant) on the larger side, though titanium mitigates this. The quick-adjust clasp is lauded for its functionality and ability to balance the watch head. Overall, owners and reviewers rate the Grand Seiko SLGB023 highly for its stunning dial and precise Spring Drive movement at its price point.
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