Side by side

Orient RA-AC0K Diver WatchvsSeiko Prospex LX line

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Orient RA-AC0K Diver Watch

Owners widely praise the Orient RA-AC0K Diver Watch for exceeding expectations and being a "real" watch. The mechanical movement is noted for keeping great time, running within a handful of seconds fast per day, with some owners considering Orient's budget movements among the best for accuracy. Overall, owners rate the Orient RA-AC0K Diver Watch highly for its surprising quality and reliable timekeeping at its price point.

Seiko Prospex LX line

Owners widely report the Seiko Prospex LX line's finishing is a step up from other models, with a case that sits well on the wrist, and some praise the green sunburst dial with blue anti-reflective sapphire crystal as phenomenal. However, owners note the high MSRP limited sales, with some desiring smaller cases and a reduced price, and others experienced quality control issues such as detached second hands and peeling DLC coating, leading to concerns about fragility. On balance, owners feel the Seiko Prospex LX line was discontinued due to pricing that alienated its target market, despite its attractive dial.

At a glance

17 of 29 specs differ
Diameter
RA-AC0K Diver Watch43.4mm
Prospex LX line44.8mm
Power Reserve
RA-AC0K Diver Watch40h
Prospex LX line72h
Water Resistance
RA-AC0K Diver Watch200m
Prospex LX line300m
MSRP
RA-AC0K Diver Watch$455
Prospex LX line$6,500

Full specifications

Case

5 specs
Diameter
43.4mm
44.8mm
Thickness
12.8mm
15.7mm
Lug-to-Lug
51mm
50.9mm
Material
Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Lume
None
LumiBrite on hands and index(es)

Movement

8 specs
Caliber
Orient F6722
5R65
Type
Automatic
Spring Drive
Beat Rate
21,600 vph
0 vph
Power Reserve
40h
72h
Jewels
22
30
Hacking
Yes
No
Hand-winding
Yes
No
Complications
Date
None

Pricing

1 specs
MSRP
$455
$6,500
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