Side by side

Grand Seiko SBGA481vsSinn U18

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

U18
SinnU18
MSRP $3,488
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Grand Seiko SBGA481

Grand Seiko SBGA481 owners praise its light titanium case and sharp finishing, with one owner reporting it runs perfectly. Reviewers describe the SBGA481 as an unapologetically Grand Seiko creation with a unique hour hand and a "geeky, techy vibe" that some find daring. On balance, the consensus is that the Grand Seiko SBGA481 is a fun and daring watch that showcases the brand's distinctive design language.

Sinn U18

The Sinn U18 is praised for its unique deep blue/green dial with three-dimensional oxygen bubbles that change with light, and its comfortable, easily adjustable bracelet. Owners find the watch stunning and a piece of history, appreciating the refined hands. The Sinn U18 features a 44mm, 15.5mm thick case made from German submarine steel, offering a 2000-meter dive specification and Sinn's Ar-Dehumidifying technology, powered by a Sellita SW300-1 movement. The case thickness is apparent, and the watch comes as a complete set with box and papers for $3,000-$3,680. On balance, owners and reviewers rate the Sinn U18 highly for its striking dial and robust build.

At a glance

18 of 29 specs differ
Diameter
SBGA48144.5mm
U1844mm
Power Reserve
SBGA48172h
U1842h
Water Resistance
SBGA481200m
U182,000m
MSRP
SBGA481$11,100
U18$3,488

Full specifications

Case

8 specs
Diameter
44.5mm
44mm
Thickness
14.3mm
15.5mm
Lug-to-Lug
50mm
Lug Width
23mm
22mm
Material
Titanium
high-strength
Finish
Water Resistance
200m
2000m
Caseback

Crystal & Dial

4 specs
Crystal Shape
AR Coating
Yes
Dial Color
Black
Indices

Movement

5 specs
Caliber
Grand Seiko 9R65
Sellita SW300-1
Type
Spring Drive
Automatic
Beat Rate
0 vph
28,800 vph
Power Reserve
72h
42h
Jewels
0
25

Pricing

1 specs
MSRP
$11,100
$3,488
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