Bremont Supermarine 500MvsSpinnaker Bradner Automatic

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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Supermarine 500M

Bradner Automatic
Diameter
43mm
42mm
Lug-to-Lug
n/a
50mm
Thickness
13mm
lowest
15mm
Water Resistance
500m
highest
180m
MSRP
$4,700
$179
lowest
Movement
Bremont BE-92AE
Miyota 8215
Case
4 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Bremont Supermarine 500M's stunning design, luxurious appearance, and excellent lume. Reviewers note its updated, legible dial and scratch-resistant hardened steel case with anti-reflective coating. Some owners find the 43mm case substantial, and one reviewer questions the long-term water resistance of its three-piece case construction. Criticisms include a second hand that can be hard to see in low light and bezel markings that could be more prominent, with one owner noting the lack of a dive suit extension on the bracelet. Overall, owners and reviewers rate the Bremont Supermarine 500M highly for its rugged refinement and competitive pricing against more expensive brands.
Owners widely praise the Spinnaker Bradner's vibrant dial options and excellent lume on both indices and bezel, with one reviewer calling the textured dial's fine details and color-matched bezel lume a work of art. The bezel action is described as extremely crisp. However, some finishing on the minute ring is imprecise, and the inner bezel crown rotates too easily, with one owner finding the clasp unsatisfactory. The watch uses a Seiko NH35 automatic movement and is 42mm in case size with 180m water resistance. On balance, owners rate the Spinnaker Bradner highly for its eye-catching design and lume at its price point.
The Spinnaker Atlantic Blue's reliable Seiko NH35 automatic movement is a key strength. The watch's lume performance is somewhat lacking, which may be a trade-off for some buyers. Reviewers disagree on the watch's bezel action, with one reviewer praising it as smooth and precise, while the other two do not mention it.
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