Side by side
Helicon Professional ChronographvsSeiko Prospex SPEEDTIMER
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Professional Chronograph41mm
Prospex SPEEDTIMER39mm
Power Reserve
Professional Chronograph—
Prospex SPEEDTIMER40h
Water Resistance
Professional Chronograph100m
Prospex SPEEDTIMER100m
MSRP
Professional Chronograph$550
Prospex SPEEDTIMER$725
Full specifications
Case
4 specsCategory
—
Chronograph
Diameter
41mm
39mm
Thickness
11.95mm
13.3mm
Lug-to-Lug
47.5mm
45.5mm
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Graphene Grey
Black
Lume
None
LumiBrite on hands and index(es)
Movement
2 specsCaliber
—
V192
Power Reserve
—
40h
Pricing
1 specsMSRP
$550
$725
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