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

At MSRP the Orient RA-AK03 Version 5 Classic Watch is the cheaper of the two at $420, against $625 for the Seiko Prospex Sea — a $205 gap before any retailer discounting.

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

The Seiko Prospex Sea wears larger at 43.8mm versus 41.5mm for the Orient RA-AK03 Version 5 Classic Watch — a 2.3mm difference across the dial.

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

The Seiko Prospex Sea is rated to 200m versus 50m for the Orient RA-AK03 Version 5 Classic Watch.

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

The Seiko Prospex Sea carries a 41-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 Sea?

Both watches run automatic movements — the Orient RA-AK03 Version 5 Classic Watch uses the F6B24 and the Seiko Prospex Sea uses the 4R35.

Side by side

Orient RA-AK03 Version 5 Classic WatchvsSeiko Prospex Sea

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 Sea

srpe37

MSRP $625

At a glance

15 of 29 specs differ

Diameter

RA-AK03 Version 5 Classic Watch41.5mm

Prospex Sea43.8mm

Power Reserve

RA-AK03 Version 5 Classic Watch40h

Prospex Sea41h

Water Resistance

RA-AK03 Version 5 Classic Watch50m

Prospex Sea200m

MSRP

RA-AK03 Version 5 Classic Watch$420

Prospex Sea$625

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

White

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

5 specs

Caliber

F6B24

4R35

Beat Rate

21,600 vph

28,800 vph

Power Reserve

40h

41h

Jewels

Complications

GMT, Day-date

None

Pricing

1 specs

MSRP

$420

$625

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