Side by side

Bremont Supermarine 300MvsSpinnaker Challenger Automatic

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Challenger Automatic
SpinnakerChallenger Automatic
MSRP $289

At a glance

9 of 29 specs differ
Diameter
Supermarine 300M40mm
Challenger Automatic42mm
Power Reserve
Supermarine 300M40h
Challenger Automatic40h
Water Resistance
Supermarine 300M300m
Challenger Automatic200m
MSRP
Supermarine 300M$3,550
Challenger Automatic$289

Full specifications

Case

6 specs
Diameter
40mm
42mm
Thickness
12mm
19mm
Lug-to-Lug
49.5mm
Lug Width
20mm
22mm
Material
904L Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Green
Blue

Movement

1 specs
Caliber
BE-92AE
SII NH35A

Pricing

1 specs
MSRP
$3,550
$289

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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.

Bremont Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

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.

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