Bremont Supermarine 500MvsSecond Hour Shoal Deep

Shoal Deep
Second HourShoal Deep

Ref. shoal-deep-300-metre-dive-watch·MSRP $365

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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.

Bremont Supermarine 500M at true scale

Supermarine 500M

Second Hour Shoal Deep at true scale

Shoal Deep

Diameter

43mm

42.5mm

Thickness

13mm

lowest

13.8mm

Water Resistance

500m

highest

300m

MSRP

$4,700

$365

lowest

Movement

Bremont BE-92AE

Miyota 9039

Case

6 specs
Diameter
43mm
42.5mm
Thickness
13mm
13.76mm
Lug-to-Lug
n/a
n/a
Lug Width
22mm
n/a
Material
316L Stainless Steel
Stainless Steel
Water Resistance
500m
300m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
n/a
Dial Color
Black
n/a

Movement

1 specs
Caliber
Bremont BE-92AE
Miyota 9039

Pricing

1 specs
MSRP
$4,700
$365
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Reviews

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

Bremont Supermarine 500M

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.

Second Hour Shoal Deep

The Second Hour Shoal Deep — Second Hour is praised for its value, dynamic orange dial, and beads of rice bracelet. Owners note subtle color differences between the hardened steel and case, and suggest the bracelet would be more cohesive with endlinks matching the case texture. One owner dislikes the dial and caseback design, preferring a no-date movement and questioning the utility of a 12-hour bezel on a dive watch, finding it lacks a minute/seconds track. Overall, owners rate the Second Hour Shoal Deep — Second Hour highly for its value and bracelet design.