Side by side
Helgray Speedster (Racing Light Blue)vsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Speedster (Racing Light Blue)39mm
Prospex Sea41.7mm
Power Reserve
Speedster (Racing Light Blue)40h
Prospex Sea41h
Water Resistance
Speedster (Racing Light Blue)30m
Prospex Sea200m
MSRP
Speedster (Racing Light Blue)$299
Prospex Sea$595
Full specifications
Case
5 specsCategory
Chronograph
Diver
Diameter
39mm
41.7mm
Thickness
12mm
12.3mm
Lug-to-Lug
46mm
49.5mm
Water Resistance
30m
200m
Crystal & Dial
2 specsCrystal
Sapphire
Hardlex
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Miyota 6S21
4R35
Power Reserve
40h
41h
Jewels
25
23
Pricing
1 specsMSRP
$299
$595
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