Side by side
Casio EFB-730DvsSeiko Prospex SPEEDTIMER
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
EFB-730D40mm
Prospex SPEEDTIMER39mm
Power Reserve
EFB-730D—
Prospex SPEEDTIMER—
Water Resistance
EFB-730D100m
Prospex SPEEDTIMER100m
MSRP
EFB-730D$165
Prospex SPEEDTIMER$725
Full specifications
Case
5 specsDiameter
40mm
39mm
Thickness
11mm
13.3mm
Lug-to-Lug
47mm
45.5mm
Lug Width
—
20mm
Finish
—
—
Crystal & Dial
4 specsCrystal Shape
—
Curved
AR Coating
No
Anti-reflective coating on inner surface
Dial Color
Black
—
Lume
None
LumiBrite on hands and index(es)
Movement
2 specsCaliber
—
V192
Power Reserve
—
0h
Pricing
1 specsMSRP
$165
$725
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