Side by side

Spinnaker Challenger AutomaticvsSeiko Prospex Sea Save the Ocean Special Edition

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Challenger Automatic
SpinnakerChallenger Automatic
MSRP $289

At a glance

11 of 29 specs differ
Diameter
Challenger Automatic42mm
Prospex Sea Save the Ocean Special Edition43.8mm
Power Reserve
Challenger Automatic40h
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
Challenger Automatic200m
Prospex Sea Save the Ocean Special Edition200m
MSRP
Challenger Automatic$289
Prospex Sea Save the Ocean Special Edition$650

Full specifications

Case

4 specs
Diameter
42mm
43.8mm
Thickness
19mm
12.8mm
Lug-to-Lug
49.5mm
48.7mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
SII NH35A
4R35
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$289
$650

Follow this matchup

Get a note when Spinnaker Challenger Automatic vs Seiko Prospex Sea Save the Ocean Special Edition gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Spinnaker Challenger Automatic

The Spinnaker Challenger Automatic is widely praised for its fun, playful design, solid build quality, and satisfying bezel action. Owners appreciate the comfortable 42mm DLC-coated case and the thoughtful integration of the Popeye theme, with the character serving as the hour and minute hands. Reviewers note the reliable Seiko NH35 movement and 300m water resistance. Some owners find the blue lume weaker than expected, and the ultra-domed sapphire crystal presents challenges for photography. The thick rubber strap is also cited as difficult to manage. Overall, owners and reviewers rate the Spinnaker Challenger Automatic highly for its unique character integration and solid dive watch fundamentals at its price point.

Seiko Prospex Sea Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea Save the Ocean Special Edition for its exceptional and captivating dial designs, often described as a highlight that evokes ocean surfaces with unique textures and color gradients. The watch is frequently noted for its excellent value, with some reviewers comparing its aesthetics to much higher-priced brands. Owners report satisfactory lume and accurate timekeeping, with figures ranging from +5 seconds per day to more precise results. However, some owners and reviewers point to the bracelet clasp as a point of criticism, describing it as underwhelming or flimsy, and some find the watch to be top-heavy. There are also mentions of imperfect day/date wheel alignment and occasional bezel alignment issues on some models within the line. The Seiko Prospex Sea Save the Ocean Special Edition is available in various case sizes, with some owners questioning if certain dimensions are too bulky for daily wear.

Keep exploring

More watches worth a look

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

Adjacent matchups

People also compared

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