Which is cheaper, the Seiko Prospex Sea or the Helgray Speedster (Racing Light Blue)?

At MSRP the Helgray Speedster (Racing Light Blue) is the cheaper of the two at $299, against $1,500 for the Seiko Prospex Sea — a $1,201 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea or the Helgray Speedster (Racing Light Blue)?

The Seiko Prospex Sea wears larger at 43.5mm versus 39mm for the Helgray Speedster (Racing Light Blue) — a 4.5mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea or the Helgray Speedster (Racing Light Blue)?

The Seiko Prospex Sea is rated to 200m versus 30m for the Helgray Speedster (Racing Light Blue).

Which has a longer power reserve, the Seiko Prospex Sea or the Helgray Speedster (Racing Light Blue)?

The Seiko Prospex Sea carries a 70-hour power reserve against 40 hours on the Helgray Speedster (Racing Light Blue).

What movement does the Seiko Prospex Sea run compared to the Helgray Speedster (Racing Light Blue)?

Both watches run automatic movements — the Seiko Prospex Sea uses the 6R35 and the Helgray Speedster (Racing Light Blue) uses the Miyota 6S21.

Side by side

Seiko Prospex SeavsHelgray Speedster (Racing Light Blue)

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

Seiko Prospex Sea

spb349j1

MSRP $1,500

Helgray Speedster (Racing Light Blue)

speedster-racing-light-blue

MSRP $299

At a glance

13 of 29 specs differ

Diameter

Prospex Sea43.5mm

Speedster (Racing Light Blue)39mm

Power Reserve

Prospex Sea70h

Speedster (Racing Light Blue)40h

Water Resistance

Prospex Sea200m

Speedster (Racing Light Blue)30m

MSRP

Prospex Sea$1,500

Speedster (Racing Light Blue)$299

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands and index(es)

None

Movement

3 specs

Caliber

6R35

Miyota 6S21

Power Reserve

70h

40h

Jewels

Pricing

1 specs

MSRP

$1,500

$299

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