Certina DS Action Diver ChronovsCWC [VAULT] CWC RN81 Diver Automatic Watch

![[VAULT] CWC RN81 Diver Automatic Watch](/_next/image?url=%2Fimages%2Fwatches%2Fcwc--vault-cwc-rn81-clearance-diver-automatic-watch.png%3Fv%3D1792936160623&w=1536&q=60)
Ref. vault-cwc-rn81-clearance-diver-automatic-watch·MSRP $1,792
lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures
Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

DS Action Diver Chrono
![CWC [VAULT] CWC RN81 Diver Automatic Watch at true scale](/_next/image?url=%2Fimages%2Fwatches%2Fcwc--vault-cwc-rn81-clearance-diver-automatic-watch.png%3Fv%3D1792936160623&w=1536&q=60)
[VAULT] CWC RN81 Diver Automatic Watch
Diameter
44.6mm
45mm
Lug-to-Lug
52.6mm
47mm
lowest
Thickness
16.2mm
12.7mm
lowest
Water Resistance
300m
300m
MSRP
$2,219
$1,792
lowest
Movement
Tissot Valjoux A05.231
Sellita SW200-1
Case
4 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Certina DS Action Diver Chrono for its excellent value and high-end feel, with many considering it one of the best Swiss or Japanese divers under $2000. Reviewers and owners alike highlight its robust build, attractive design, and well-finished case, with some preferring the contrast of the steel version for readability. One owner notes the chronograph totaliser lacks lume, and another finds the 21mm lug width inconvenient for strap changes. The Certina DS Action Diver Chrono is powered by the Tissot Valjoux A05.231 automatic movement and has a 68-hour power reserve, though one owner mentions a low reserve requiring daily winding if not worn extensively. Overall, owners rate the Certina DS Action Diver Chrono highly for its exceptional quality and value at its price point.
Owners widely praise the CWC RN81 Diver Automatic Watch for its vintage-inspired aesthetic, milspec bezel, and lume details, with many finding it incredibly legible even in the dark. The watch is considered great value for its price, featuring top-notch crown, bezel, and case finishing, and has proven durable, surviving accidental drops. Some owners find the case a bit thick and large, and one owner prefers the PVD finish over the polished case. Overall, owners rate the CWC RN81 Diver Automatic Watch highly for its legibility and robust build at its price point.
Similar watches
Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.
Also compared
Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.

![CWC (Cabot Watch Company) [VAULT] CWC RN81 Diver Automatic Watch](/_next/image?url=%2Fimages%2Fwatches%2Fsm%2Fcwc-cabot-watch-company--vault-cwc-rn81-clearance-diver-automatic-watch.png%3Fv%3D1792936166325&w=1536&q=55)







