Side by side

Spinnaker Challenger AutomaticvsDOXA SUB 300 Carbon

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

Challenger Automatic
SpinnakerChallenger Automatic
MSRP $289
SUB 300 Carbon
DOXASUB 300 Carbon
MSRP $4,390

At a glance

13 of 29 specs differ
Diameter
Challenger Automatic42mm
SUB 300 Carbon42.5mm
Power Reserve
Challenger Automatic40h
SUB 300 Carbon38h
Water Resistance
Challenger Automatic200m
SUB 300 Carbon300m
MSRP
Challenger Automatic$289
SUB 300 Carbon$4,390

Full specifications

Case

6 specs
Diameter
42mm
42.5mm
Thickness
19mm
12mm
Lug-to-Lug
49.5mm
46mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Carbon
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
Flat
Domed
AR Coating
Inner
Yes
Dial Color
Blue
Aquamarine
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
SII NH35A
COSC Chronometer
Power Reserve
40h
38h

Pricing

1 specs
MSRP
$289
$4,390

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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.

DOXA SUB 300 Carbon

The DOXA SUB 300 Carbon is widely praised for its exceptionally lightweight and comfortable forged carbon case, making it an ideal vacation or everyday watch. Owners and reviewers highlight the vibrant dial colors, the satisfyingly clicky bezel action, and the comfortable, adjustable rubber strap with a clever clasp. Its COSC-certified ETA 2824-2 movement is noted for reliable timekeeping, with one owner reporting +0.9 seconds per day and another an average of +5 seconds per day, though a 38-hour power reserve is a trade-off for its slimness. Some reviewers point out that the no-decompression bezel markings may not align with current diving science and that the luminous markers are less bright than some alternatives. The integrated rubber strap requires cutting to size, and the clasp has sharp edges. On balance, owners and reviewers rate the DOXA SUB 300 Carbon highly for its unique, lightweight carbon construction and comfortable wearability.

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