Side by side

Casio EFB-730DvsSeiko Prospex SPEEDTIMER

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

Add a watch
EFB-730D
CasioEFB-730D
MSRP $165
See the full EFB-730D
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $2,200
See the full Prospex SPEEDTIMER
Buy from Casio ↗
Buy used on eBay ↗
Buy from Seiko ↗
Buy used on eBay ↗

At a glance

13 of 29 specs differ
Diameter
EFB-730D40mm
Prospex SPEEDTIMER42mm
Power Reserve
EFB-730D—
Prospex SPEEDTIMER—
Water Resistance
EFB-730D100m
Prospex SPEEDTIMER100m
MSRP
EFB-730D$165
Prospex SPEEDTIMER$2,200

Full specifications

Case

5 specs
Diameter
40mm
42mm
Thickness
11mm
12.9mm
Lug-to-Lug
47mm
49.6mm
Lug Width
—
20mm
Finish
—
—

Crystal & Dial

4 specs
Crystal Shape
—
Curved
AR Coating
No
Super-clear coating
Dial Color
Black
—
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
—
5X83
Power Reserve
—
0h
Jewels
0
14

Pricing

1 specs
MSRP
$165
$2,200
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.

Duxot Accelero Chronograph Compax Skeleton Edition
Duxotmicro

Accelero Chronograph Compax Skeleton Edition

3 variantsAccelero Chronograph
40mm·Quartz·100m WR
$199MSRP
—Used
Dryden Chrono Diver Gen 2
Drydenmicro

Chrono Diver Gen 2

3 watches · 18 variantsChrono Diver
42mm·Quartz·101m WR
$450MSRP
—Used
Yema Rallygraf Alpine Cup Series
Yemamicro

Rallygraf Alpine Cup Series

4 watches · 10 variantsRallygraf
39mm·Quartz
$449MSRP
—Used
Astor + Banks Chrono
Astor + Banksmicro

Chrono

3 variantsChrono
44mm·Quartz·100m WR
$575MSRP
—Used
Duxot Vitesse Dual Time Chronograph
Duxotmicro

Vitesse Dual Time Chronograph

4 variantsVitesse Dual
39mm·Quartz·100m WR
$240MSRP
—Used
Helgray Silverstone (Refurbished)
Helgraymicro

Silverstone (Refurbished)

4 variantsSilverstone Black (Refurbished)
40mm·Quartz
$150MSRP
—Used
AVI-8 Hawker Hunter Atlas Dual Time Chronograph
AVI-8micro

Hawker Hunter Atlas Dual Time Chronograph

9 watches · 58 variantsHawker
43mm·Quartz
$380MSRP
—Used
Islander Islander Calverton Flight Chronograph Alarm Watch with Black Dial #ISL-282
Islandermicro
Under $50

Islander Calverton Flight Chronograph Alarm Watch with Black Dial #ISL-282

9 watches · 9 variantsUnder $50
41.8mm·Quartz·200m WR
$449MSRP
—Used
All alternatives to the EFB-730D →All alternatives to the Prospex SPEEDTIMER →
Explore the full catalog

Follow this matchup

Get a note when Casio EFB-730D vs Seiko Prospex SPEEDTIMER 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.

Duxot Accelero ChronographvsSeiko Prospex SPEEDTIMERDuxot Accelero Chronograph Compax Skeleton EditionvsSeiko Prospex SPEEDTIMERHelgray Silverstone (Refurbished)vsSeiko Prospex SPEEDTIMERBalticus Watches Balticus Volans ChronografvsSeiko Prospex SPEEDTIMERCasio EFB-730DvsDryden Chrono Diver Series 1Casio EFB-730DvsDryden Chrono Diver Gen 2
Edit this comparisonAdd another watchMore chronograph comparisonsBest Chronograph Watches Under $500Explore more 39–43mm watches