Linde Werdelin Biformeter Elemental – Black DialvsCWC [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.

Biformeter Elemental – Black Dial
![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
44mm
45mm
Lug-to-Lug
46mm
lowest
47mm
Thickness
15mm
12.7mm
lowest
Water Resistance
300m
300m
MSRP
$5,206
$1,792
lowest
Movement
Automatic
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.
Linde Werdelin Biformeter Elemental – Black Dial owners and reviewers praise its exceptionally smooth winding feel and impressive Super-LumiNova lume that remains bright for hours. The 44mm case is noted for its distinctive angular lines and satisfying tactile finishing. Some reviewers would prefer a smaller 40mm option for the case size. The ETA 2893 movement is considered robust and serviceable, though pricing sits high for an ETA-based sports watch, offset by limited production. On balance, reviewers find the Linde Werdelin Biformeter Elemental – Black Dial a successful balance of sport and formal wear, with its finishing and lume being key strengths.
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)







