Which is cheaper, the Orient RA-AC0K05G00B LE or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

At MSRP the Orient RA-AC0K05G00B LE is the cheaper of the two at $450, against $3,300 for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition — a $2,850 gap before any retailer discounting.

Which is bigger, the Orient RA-AC0K05G00B LE or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition wears larger at 44mm versus 43.4mm for the Orient RA-AC0K05G00B LE — a 0.6mm difference across the dial.

Which has a longer power reserve, the Orient RA-AC0K05G00B LE or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition carries a 50-hour power reserve against 40 hours on the Orient RA-AC0K05G00B LE.

What movement does the Orient RA-AC0K05G00B LE run compared to the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

Both watches run automatic movements — the Orient RA-AC0K05G00B LE uses the F6722 and the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition uses the 8L35.

Side by side

Orient RA-AC0K05G00B LEvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

Orient RA-AC0K05G00B LE

ra-ac0k05g00b

MSRP $450

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

sla061j1

MSRP $3,300

At a glance

15 of 29 specs differ

Diameter

RA-AC0K05G00B LE43.4mm

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm

Power Reserve

RA-AC0K05G00B LE40h

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h

Water Resistance

RA-AC0K05G00B LE200m

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m

MSRP

RA-AC0K05G00B LE$450

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

4 specs

Diameter

43.4mm

44mm

Thickness

12.8mm

13mm

Lug-to-Lug

51mm

49.3mm

Lug Width

22mm

20mm

Crystal & Dial

5 specs

Crystal Shape

—

Curved

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

Gold

Black

Indices

—

Applied

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

5 specs

Caliber

F6722

8L35

Beat Rate

21,600 vph

28,800 vph

Power Reserve

40h

50h

Jewels

Complications

Date

None

Pricing

1 specs

MSRP

$450

$3,300

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