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

At MSRP the Helgray Speedster (Racing Light Blue) is the cheaper of the two at $299, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $696 gap before any retailer discounting.

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

The Seiko Prospex SPEEDTIMER Mechanical wears larger at 39.5mm versus 39mm for the Helgray Speedster (Racing Light Blue) — a 0.5mm difference across the dial.

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

The Helgray Speedster (Racing Light Blue) is rated to 30m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical.

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

The Seiko Prospex SPEEDTIMER Mechanical carries a 72-hour power reserve against 40 hours on the Helgray Speedster (Racing Light Blue).

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

Both watches run automatic movements — the Seiko Prospex SPEEDTIMER Mechanical uses the 6R55 and the Helgray Speedster (Racing Light Blue) uses the Miyota 6S21.

Side by side

Seiko Prospex SPEEDTIMER MechanicalvsHelgray Speedster (Racing Light Blue)

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

Seiko Prospex SPEEDTIMER Mechanical

spb513j1

MSRP $995

Helgray Speedster (Racing Light Blue)

speedster-racing-light-blue

MSRP $299

At a glance

10 of 29 specs differ

Diameter

Prospex SPEEDTIMER Mechanical39.5mm

Speedster (Racing Light Blue)39mm

Power Reserve

Prospex SPEEDTIMER Mechanical72h

Speedster (Racing Light Blue)40h

Water Resistance

Prospex SPEEDTIMER Mechanical200m

Speedster (Racing Light Blue)30m

MSRP

Prospex SPEEDTIMER Mechanical$995

Speedster (Racing Light Blue)$299

Full specifications

Case

3 specs

Diameter

39.5mm

39mm

Lug-to-Lug

44.5mm

46mm

Water Resistance

200m

30m

Crystal & Dial

3 specs

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands and index(es)

None

Movement

3 specs

Caliber

6R55

Miyota 6S21

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$995

$299

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