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

At MSRP the Helgray Speedster (Racing Light Blue) is the cheaper of the two at $299, against $1,150 for the Seiko Prospex Land Mechanical GMT — a $851 gap before any retailer discounting.

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

The Seiko Prospex Land Mechanical GMT 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 Land Mechanical GMT or the Helgray Speedster (Racing Light Blue)?

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

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

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

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

Both watches run automatic movements — the Seiko Prospex Land Mechanical GMT uses the 6R54 and the Helgray Speedster (Racing Light Blue) uses the Miyota 6S21.

Side by side

Seiko Prospex Land Mechanical GMTvsHelgray Speedster (Racing Light Blue)

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

Add a watch

Seiko Prospex Land Mechanical GMT

spb377j1

MSRP $1,150

Helgray Speedster (Racing Light Blue)

speedster-racing-light-blue

MSRP $299

At a glance

12 of 29 specs differ

Diameter

Prospex Land Mechanical GMT39.5mm

Speedster (Racing Light Blue)39mm

Power Reserve

Prospex Land Mechanical GMT72h

Speedster (Racing Light Blue)40h

Water Resistance

Prospex Land Mechanical GMT200m

Speedster (Racing Light Blue)30m

MSRP

Prospex Land Mechanical GMT$1,150

Speedster (Racing Light Blue)$299

Full specifications

Case

5 specs

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

6R54

Miyota 6S21

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$1,150

$299

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Seiko Prospex Land Mechanical GMTvsHelgray Speedster (Racing Light Blue)

At a glance

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