Side by side

Orient RA-AC0K Diver WatchvsSeiko Prospex Sea Save the Ocean Special Edition

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

RA-AC0K Diver Watch
OrientRA-AC0K Diver Watch
MSRP $455

At a glance

12 of 29 specs differ
Diameter
RA-AC0K Diver Watch43.4mm
Prospex Sea Save the Ocean Special Edition43.8mm
Power Reserve
RA-AC0K Diver Watch40h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
RA-AC0K Diver Watch200m
Prospex Sea Save the Ocean Special Edition200m
MSRP
RA-AC0K Diver Watch$455
Prospex Sea Save the Ocean Special Edition$650

Full specifications

Case

2 specs
Diameter
43.4mm
43.8mm
Lug-to-Lug
51mm
48.7mm

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Anti-reflective coating on inner surface
Indices
Applied
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
F6722
4R35
Beat Rate
21,600 vph
28,800 vph
Power Reserve
40h
41h
Jewels
22
23
Complications
Date
None

Pricing

1 specs
MSRP
$455
$650

Follow this matchup

Get a note when Orient RA-AC0K Diver Watch vs Seiko Prospex Sea Save the Ocean Special Edition gets more votes, a community discussion, or a price drop. No account needed.

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 Sea Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea Save the Ocean Special Edition for its exceptional and captivating dial designs, often described as a highlight that evokes ocean surfaces with unique textures and color gradients. The watch is frequently noted for its excellent value, with some reviewers comparing its aesthetics to much higher-priced brands. Owners report satisfactory lume and accurate timekeeping, with figures ranging from +5 seconds per day to more precise results. However, some owners and reviewers point to the bracelet clasp as a point of criticism, describing it as underwhelming or flimsy, and some find the watch to be top-heavy. There are also mentions of imperfect day/date wheel alignment and occasional bezel alignment issues on some models within the line. The Seiko Prospex Sea Save the Ocean Special Edition is available in various case sizes, with some owners questioning if certain dimensions are too bulky for daily wear.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.