Spinnaker Fleuss Seconde/Seconde/ 2025 EditionvsSeiko Prospex Sea

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.

Spinnaker Fleuss Seconde/Seconde/ 2025 Edition at true scale

Fleuss Seconde/Seconde/ 2025 Edition

Seiko Prospex Sea at true scale

Prospex Sea

Diameter

40mm

43.8mm

Lug-to-Lug

47mm

lowest

48.7mm

Thickness

12.9mm

12.8mm

lowest

Water Resistance

150m

200m

highest

Power Reserve

42h

highest

41h

MSRP

$525

lowest

$625

Movement

Miyota 9015

Seiko 4R35

Case

5 specs
Diameter
40mm
43.8mm
Thickness
12.9mm
12.8mm
Lug-to-Lug
47mm
48.7mm
Lug Width
20mm
22mm
Water Resistance
150m
200m

Crystal & Dial

4 specs
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
White
n/a
Texture
Phantom motif
n/a
Lume
Swiss Newlite
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Miyota 9015
Seiko 4R35
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
41h
Jewels
24
23

Pricing

1 specs
MSRP
$525
$625
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.

Spinnaker Fleuss Seconde/Seconde/ 2025 Edition

The Spinnaker Fleuss Seconde/Seconde/ 2025 Edition is praised for its stunning green dial and vintage vibe, with owners noting its good size, legibility, and solid build, making it a frequent wearer. The blue dial is also noted for catching the light. One owner reports the watch wears lightly and is accurate after two weeks of beach use. The models are playful, niche watches with 50 ghost graphics on the dial, priced at $370 USD. While the 43mm case is comfortable, it's on the larger side. One owner was thoroughly unimpressed with the collaboration model. Overall, owners rate the Spinnaker Fleuss Seconde/Seconde/ 2025 Edition highly for its dial aesthetics and value at the price point.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value as a sport watch, with owners highlighting its comfortable wearability and generous lume. Reviewers note its solid build quality and attractive design, with some specifically mentioning the matte black dial as a strong point. One owner reports accuracy around +1 to +2 seconds per day. The 43.8mm case size is considered substantial by some, and one owner found the watch heavy and thick, regretting not choosing a different variant. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its blend of classic design and modern utility at an accessible price point.