CWC [VAULT] CWC RN81 Diver Automatic WatchvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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.

CWC [VAULT] CWC RN81 Diver Automatic Watch at true scale

[VAULT] CWC RN81 Diver Automatic Watch

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition at true scale

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Diameter

45mm

44mm

Lug-to-Lug

47mm

lowest

49.3mm

Thickness

12.7mm

lowest

13mm

Water Resistance

300m

highest

200m

Power Reserve

n/a

50h

MSRP

$1,792

lowest

$3,300

Movement

Sellita SW200-1

Seiko 8L35

Case

4 specs
Diameter
45mm
44mm
Thickness
12.7mm
13mm
Lug-to-Lug
47mm
49.3mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
n/a
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 8L35
Power Reserve
0h
50h
Jewels
0
26

Pricing

1 specs
MSRP
$1,792
$3,300
Keep your wishlist and collection together in the appExplore the app

Reviews

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

CWC [VAULT] CWC RN81 Diver Automatic Watch

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.

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive dial with a jewel-toned teal color and rippling-water pattern, and its smooth bezel action. Some owners find it a refined evolution of previous models with a comfortable case and bracelet. However, a significant number of owners express disappointment with the accuracy of the 6R movement at its price point, with some noting it runs slow. The steep rehaut and marker size make the 24-hour numbers difficult to read, and the case design is described as making the watch feel top-heavy. On balance, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined design, despite widespread concerns about the movement's accuracy for the price.

Similar watches

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

DiscussionNot started

Also compared

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