Side by side

Spinnaker PopeyevsSinn U18

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

Popeye
SpinnakerPopeye
MSRP $395
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.

Spinnaker Popeye

The Spinnaker Popeye is a fun, playful dive watch with extensive lume and a dramatic, ultra-domed sapphire crystal. Owners are drawn to the nostalgia and playful styling, though some find the cartoon theme cheapens the look and the 42mm case too thick. The rubber strap can be stiff, and some owners report poor customer service. Overall, owners and reviewers appreciate the Spinnaker Popeye for its unique, nostalgic design and extensive lume.

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

14 of 29 specs differ
Diameter
Popeye43mm
U1844mm
Power Reserve
Popeye40h
U1842h
Water Resistance
Popeye150m
U182,000m
MSRP
Popeye$395
U18$3,488

Full specifications

Case

7 specs
Diameter
43mm
44mm
Thickness
13mm
15.5mm
Lug-to-Lug
51mm
Material
316L Stainless Steel
high-strength
Finish
Brushed and polished
Water Resistance
150m
2000m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Popeye Blue
Black
Indices
Applied

Movement

2 specs
Caliber
SII NH35A
SW300-1
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$395
$3,488
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