Side by side

Signum CerovsSpinnaker Cahill Automatic

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

Add a watch
Cero
SignumCero
MSRP $519
Cahill Automatic
SpinnakerCahill Automatic
MSRP $350
Buy from Signum ↗
Buy used on eBay ↗
Buy from Spinnaker ↗
Buy used on eBay ↗

At a glance

10 of 29 specs differ
Diameter
Cero39.5mm
Cahill Automatic42mm
Power Reserve
Cero—
Cahill Automatic40h
Water Resistance
Cero200m
Cahill Automatic200m
MSRP
Cero$519
Cahill Automatic$350

Full specifications

Case

6 specs
Category
—
Diver
Diameter
39.5mm
42mm
Thickness
13.4mm
13.7mm
Lug-to-Lug
—
51mm
Lug Width
—
22mm
Material
Bronze
316L Stainless Steel

Crystal & Dial

1 specs
Dial Color
—
Green

Movement

2 specs
Caliber
Seiko NH35
SII NH35A
Power Reserve
—
40h

Pricing

1 specs
MSRP
$519
$350
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.

Ventus Watches Northstar
Ventus Watchesmicro

Northstar

8 variantsRef. northstar-n-08
40mm·Automatic·300m WR
—MSRP
—Used
Phoibos Wave Master
Phoibosmicro

Wave Master

3 variantsWave Master
42mm·Automatic·300m WR
$309MSRP
—Used
DIFICIANO Marlin
DIFICIANOmicro

Marlin

4 variantsRef.
40mm·Automatic·300m WR
$399MSRP
—Used
Phoibos Eagle Ray
Phoibosmicro

Eagle Ray

4 variantsEagle Ray
41mm·Automatic·200m WR
$360MSRP
—Used
Serket Watch Co Reef Mariana
Serket Watch Comicro

Reef Mariana

4 variantsRef. reef-x-mariana-diver-orange-dial-black-bezel-40mm-pre-order
40mm·Automatic·200m WR
$449MSRP
—Used
Spinnaker Hull Diver
Spinnakermicro

Hull Diver

8 watches · 32 variantsHull
42mm·Automatic·300m WR
$375MSRP
—Used
Ventus Watches Mori
Ventus Watchesmicro

Mori

14 variantsRef. mori-2-300m-steel-diver-m-8
41mm·Automatic·300m WR
—MSRP
—Used
Marathon Jeep Rubicon GSAR
Marathonmicro
Jeep x Marathon

Jeep Rubicon GSAR

4 watches · 4 variantsJeep x Marathon
41mm·Automatic·300m WR
$2,100MSRP
—Used
All alternatives to the Cero →All alternatives to the Cahill Automatic →
Explore the full catalog

Follow this matchup

Get a note when Signum Cero vs Spinnaker Cahill Automatic 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.

Spinnaker Cahill AutomaticvsVentus Watches NorthstarDIFICIANO MarlinvsSpinnaker Cahill AutomaticSerket Watch Co Reef MarianavsSpinnaker Cahill AutomaticSpinnaker Cahill AutomaticvsVentus Watches MoriPhoibos Wave MastervsSignum CeroPhoibos Eagle RayvsSignum Cero
Edit this comparisonAdd another watchExplore more 38–43mm watches