Side by side

Sinn U18vsZero West S4 Blackout P9427 Spitfire

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

Add a watch
U18
SinnU18
MSRP $3,488
S4 Blackout P9427 Spitfire
Zero WestS4 Blackout P9427 Spitfire
Buy from Sinn ↗
Buy used on eBay ↗
Buy from Zero West ↗
Buy used on eBay ↗

At a glance

13 of 29 specs differ
Diameter
U1844mm
S4 Blackout P9427 Spitfire44mm
Power Reserve
U1842h
S4 Blackout P9427 Spitfire38h
Water Resistance
U182,000m
S4 Blackout P9427 Spitfire100m
MSRP
U18$3,488
S4 Blackout P9427 Spitfire—

Full specifications

Case

7 specs
Category
Diver
—
Thickness
15.5mm
14.1mm
Lug-to-Lug
—
49.6mm
Material
high-strength
Stainless Steel
Finish
—
Brushed and polished
Water Resistance
2000m
100m
Caseback
—
Solid

Crystal & Dial

3 specs
Crystal Shape
—
Flat
AR Coating
—
Inner
Indices
—
Applied

Movement

2 specs
Caliber
SW300-1
ETA 2824
Power Reserve
42h
38h

Pricing

1 specs
MSRP
$3,488
—
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Marathon OSAR-D (Original SAR with Date) Automatic 46mm
Marathonmicro

OSAR-D (Original SAR with Date) Automatic 46mm

6 watches · 6 variantsOSAR
46mm·Automatic·300m WR
$2,500MSRP
—Used
Kobold Spirit of America Automatic
Koboldmicro

Spirit of America Automatic

Ref. spirit-of-america-automatic
43.5mm·Automatic·200m WR
$5,050MSRP
—Used
Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic
Marathonmicro

JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Ref. 46mm-anthracite-large-divers-automatic-jdd
46mm·Automatic·300m WR
$3,250MSRP
—Used
Kobold Soarway Diver Safari
Koboldmicro

Soarway Diver Safari

2 variantsRef. soarway-diver-safari
43.5mm·Automatic·300m WR
$6,050MSRP
—Used
Bremont S502
Bremontmicro
Supermarine

S502

8 watches · 39 variantsSupermarine
43mm·Automatic·500m WR
$5,100MSRP
—Used
Fortis Marinemaster M-44 DLC
Fortismicro

Marinemaster M-44 DLC

3 watches · 15 variantsMarinemaster
44mm·Automatic·300m WR
$5,450MSRP
—Used
Zero West RAF-C (1940)
Zero Westmicro

RAF-C (1940)

Ref. raf-c-1940-watch-zero-west
44mm·Automatic·100m WR
$2,750MSRP
—Used
Zero West L1 1884 Longitude
Zero Westmicro

L1 1884 Longitude

2 variantsRef. l1-longitude-day-1884-watch
44mm·Automatic·100m WR
—MSRP
—Used
All alternatives to the U18 →All alternatives to the S4 Blackout P9427 Spitfire →
Explore the full catalog

Follow this matchup

Get a note when Sinn U18 vs Zero West S4 Blackout P9427 Spitfire gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Marathon OSAR-D (Original SAR with Date) Automatic 46mmvsZero West S4 Blackout P9427 SpitfireMarathon JDD (Jumbo Day/Date) Anthracite Diver's AutomaticvsZero West S4 Blackout P9427 SpitfireBremont S502vsZero West S4 Blackout P9427 SpitfireFortis Marinemaster M-44 DLCvsZero West S4 Blackout P9427 SpitfireKobold Spirit of America AutomaticvsSinn U18Kobold Soarway Diver SafarivsSinn U18
Edit this comparisonAdd another watchExplore more 43–45mm watches