Serket Watch Co Reef X DivervsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special 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.

Reef X Diver

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition
Diameter
43mm
42.7mm
Lug-to-Lug
50mm
46.4mm
lowest
Thickness
12.7mm
lowest
13.2mm
Water Resistance
200m
200m
Power Reserve
n/a
70h
MSRP
$499
lowest
$1,350
Movement
Seiko NH35
Seiko 6R35
Case
4 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Serket Watch Co Reef X Diver as an exceptional tool for diving, even when compared to significantly more expensive timepieces. Reviewers note its attractive aesthetics, highlighting pleasing details and a slim bezel design. Overall, owners rate the Serket Watch Co Reef X Diver highly for its functional excellence and appealing visual design at its price point.
Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition for its beautiful design and refinement over prior models, with its glacier-inspired textured dial being a particular highlight. However, a significant portion of the community finds the €1500 RRP to be too high, suggesting a price point closer to €900-€1000, and note the use of an aluminum bezel insert. Some owners report that the 6R movement runs slow. On balance, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition highly for its aesthetic refinement, though the price point is a notable concern for the community.
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.










