Audaz Reef DivervsOrient RA-AC0K Diver Watch
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Reef Diver

RA-AC0K Diver Watch
Diameter
45mm
43.4mm
Lug-to-Lug
53mm
51mm
lowest
Thickness
15.5mm
12.8mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
n/a
40h
MSRP
$420
lowest
$455
Movement
Seiko NH35
Orient F6722
Case
5 specsCrystal & Dial
2 specsMovement
7 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Audaz Reef Diver is a bold, rugged tool watch with a focus on clarity and accuracy for diving. It features a 45mm 316L stainless steel case, sapphire crystal, Super-LumiNova C3, and 300m water resistance. One owner notes it is a large, heavy watch. The Audaz Reef Diver is available with a Seiko NH35 automatic movement starting at $269. On balance, owners and reviewers view the Audaz Reef Diver positively for its dependable tool-watch design and robust specifications at its price point.
Owners widely report the Orient RA-AC0K Diver Watch exceeds expectations for its price, with many praising its accuracy, though opinions vary, with one owner noting +25 seconds per day while others find it runs within a handful of seconds fast daily. The mineral crystal scratches easily, but the automatic movement is considered very good. Some owners replace the bracelet to enhance the watch's premium feel. Overall, owners rate the Orient RA-AC0K Diver Watch highly for its value and surprisingly good performance for a budget mechanical watch.
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