Side by side

Aera Instruments C-1vsCWC E9 Automatic Diver Watch

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

Add a watch
C-1
Aera InstrumentsC-1
MSRP $2,200
E9 Automatic Diver Watch
CWCE9 Automatic Diver Watch
MSRP $1,391
Buy from Aera Instruments ↗
Buy used on eBay ↗
Buy from CWC ↗
Buy used on eBay ↗

At a glance

12 of 29 specs differ
Diameter
C-142mm
E9 Automatic Diver Watch41mm
Power Reserve
C-156h
E9 Automatic Diver Watch40h
Water Resistance
C-1100m
E9 Automatic Diver Watch300m
MSRP
C-1$2,200
E9 Automatic Diver Watch$1,391

Full specifications

Case

6 specs
Category
—
Diver
Diameter
42mm
41mm
Thickness
15.75mm
12mm
Lug-to-Lug
49.55mm
47mm
Lug Width
22mm
20mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
Dial Color
Cloud
CWC E9 Automatic Diver Watch (SF300-E9 AS120)
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
SW510 BH B
Sellita SW200-1
Power Reserve
56h
40h
Jewels
27
25

Pricing

1 specs
MSRP
$2,200
$1,391
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.

Manufaktur Waldhoff Olympus
Manufaktur Waldhoffmicro

Olympus

6 variantsRef. olympus-red-gold-obsidian
43mm·Automatic·100m WR
$759MSRP
—Used
Sheffield SUPERPRODUCTION
Sheffieldmicro

SUPERPRODUCTION

Ref. superproduction
40mm·Automatic·200m WR
—MSRP
—Used
Zero West S6e Spitfire Escape
Zero Westmicro

S6e Spitfire Escape

Ref. s6e-spitfire-escape
42mm·Automatic·100m WR
$3,995MSRP
—Used
Marathon Jeep Rubicon GSAR
Marathonmicro
Jeep x Marathon

Jeep Rubicon GSAR

4 watches · 5 variantsJeep x Marathon
41mm·Automatic·300m WR
$2,100MSRP
—Used
Zero West AV1 Vulcan
Zero Westmicro

AV1 Vulcan

Ref. av1-vulcan-zero-west
42mm·Automatic·100m WR
$4,750MSRP
—Used
CWC Arctic Radar Automatic Diver Watch
CWCmicro

Arctic Radar Automatic Diver Watch

Ref. cwc-arctic-radar-automatic-diver-watch-white-dial
41mm·Automatic·300m WR
$1,333MSRP
—Used
CWC RN81 Clearance Diver Automatic Watch
CWCmicro
RN Divers

RN81 Clearance Diver Automatic Watch

2 variantsRN81 Clearance Diver Automatic Watch
41mm·Automatic·300m WR
$1,875MSRP
—Used
CWC (Cabot Watch Company) 6BB-WR Watch Black Dial
CWC (Cabot Watch Company)micro

6BB-WR Watch Black Dial

Ref. cwc-6bb-wr-watch-black-dial
42mm·Automatic·100m WR
$2,572MSRP
—Used
All alternatives to the C-1 →All alternatives to the E9 Automatic Diver Watch →
Explore the full catalog

Follow this matchup

Get a note when Aera Instruments C-1 vs CWC E9 Automatic Diver Watch 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.

CWC E9 Automatic Diver WatchvsManufaktur Waldhoff OlympusCWC E9 Automatic Diver WatchvsZero West S6e Spitfire EscapeCWC E9 Automatic Diver WatchvsZero West AV1 VulcanCWC E9 Automatic Diver WatchvsZero West L4 LongitudeAera Instruments C-1vsSheffield SUPERPRODUCTIONAera Instruments C-1vsMarathon Jeep Rubicon GSAR
Edit this comparisonAdd another watchExplore more 40–43mm watches