Which is cheaper, the Orient RA-AK03 Version 5 Classic Watch or the Seiko Prospex SPEEDTIMER Mechanical?

At MSRP the Orient RA-AK03 Version 5 Classic Watch is the cheaper of the two at $420, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $575 gap before any retailer discounting.

Which is bigger, the Orient RA-AK03 Version 5 Classic Watch or the Seiko Prospex SPEEDTIMER Mechanical?

The Orient RA-AK03 Version 5 Classic Watch wears larger at 41.5mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical — a 2mm difference across the dial.

Which has better water resistance, the Orient RA-AK03 Version 5 Classic Watch or the Seiko Prospex SPEEDTIMER Mechanical?

The Orient RA-AK03 Version 5 Classic Watch is rated to 50m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical.

Which has a longer power reserve, the Orient RA-AK03 Version 5 Classic Watch or the Seiko Prospex SPEEDTIMER Mechanical?

The Seiko Prospex SPEEDTIMER Mechanical carries a 72-hour power reserve against 40 hours on the Orient RA-AK03 Version 5 Classic Watch.

What movement does the Orient RA-AK03 Version 5 Classic Watch run compared to the Seiko Prospex SPEEDTIMER Mechanical?

Both watches run automatic movements — the Orient RA-AK03 Version 5 Classic Watch uses the F6B24 and the Seiko Prospex SPEEDTIMER Mechanical uses the 6R55.

Side by side

Orient RA-AK03 Version 5 Classic WatchvsSeiko Prospex SPEEDTIMER Mechanical

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

Orient RA-AK03 Version 5 Classic Watch

ra-ak0306s30b

MSRP $420

Seiko Prospex SPEEDTIMER Mechanical

spb513j1

MSRP $995

At a glance

17 of 29 specs differ

Diameter

RA-AK03 Version 5 Classic Watch41.5mm

Prospex SPEEDTIMER Mechanical39.5mm

Power Reserve

RA-AK03 Version 5 Classic Watch40h

Prospex SPEEDTIMER Mechanical72h

Water Resistance

RA-AK03 Version 5 Classic Watch50m

Prospex SPEEDTIMER Mechanical200m

MSRP

RA-AK03 Version 5 Classic Watch$420

Prospex SPEEDTIMER Mechanical$995

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

White

Black

Lume

None

LumiBrite on hands and index(es)

Movement

5 specs

Caliber

F6B24

6R55

Beat Rate

21,600 vph

28,800 vph

Power Reserve

40h

72h

Jewels

Complications

GMT, Day-date

None

Pricing

1 specs

MSRP

$420

$995

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