Spinnaker Diver (Round Case)vsSeiko Seiko 5 Sports SKX series
Ref. croft-mid-size-automatic-dolphin-project-limited-edition-aqua-play-sp-5177-11·MSRP $425
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.
Diver (Round Case)
Seiko 5 Sports SKX series
Diameter
40mm
38mm
Lug-to-Lug
n/a
44.2mm
Thickness
n/a
12.1mm
Water Resistance
150m
highest
100m
Power Reserve
n/a
41h
MSRP
$425
$350
lowest
Movement
Automatic
Seiko 4R36
Case
6 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise Spinnaker watches for their gorgeous appearance and great quality, with many specifically wishing for more 38-40mm case options. The Spinnaker Diver is noted as being fairly thick at 15mm, with some owners finding it wears a bit large and criticizing the exhibition case back for contributing to thickness. One owner returned a Spinnaker due to a crown detaching during date setting. On balance, owners find Spinnaker watches excellent for the price, appreciating the good specs and frequent sales that make them more accessible.
The Seiko 5 Sports SKX series is widely praised as an excellent value gateway watch, with owners and reviewers highlighting its solid build and powerful lume. The 22mm bracelet is noted for its comfort, and the watch offers numerous style options. Some owners find the original SKX models heavy and bulky, while others appreciate their ruggedness and iconic dive watch design. The Seiko 5 Sports SKX series offers an upgraded movement with hacking and hand-winding, and standard spring bars for easier strap changes. However, it lacks the screw-down crown and ISO certification of the original SKX, leading some to consider it less of a tool watch. On balance, owners and reviewers rate the Seiko 5 Sports SKX series highly for its value and modern features, despite some preferring the tool watch capabilities of its predecessor.
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.