Bremont Supermarine 300MvsHemel HD24 Automatic

Add a watch
Supermarine 300M
BremontSupermarine 300M

Ref. sm40-nd-ss-gn-b·MSRP $3,550

See the full watch
Buy from Bremont Used on eBay
HD24 Automatic
HemelHD24 Automatic

MSRP $300

See the full watch
Buy from Hemel Used on eBay

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.

Bremont Supermarine 300M at true scale

Supermarine 300M

Hemel HD24 Automatic at true scale

HD24 Automatic

Diameter

40mm

40mm

Lug-to-Lug

n/a

48mm

Thickness

12mm

lowest

13mm

Water Resistance

300m

highest

200m

MSRP

$3,550

$300

lowest

Movement

Bremont BE-92AE

Seiko NH38

Case

4 specs
Thickness
12mm
13mm
Lug-to-Lug
n/a
48mm
Material
904L Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Green
Gallant USAF Edition

Movement

1 specs
Caliber
Bremont BE-92AE
Seiko NH38

Pricing

1 specs
MSRP
$3,550
$300
Keep your wishlist and collection together in the appExplore the app
Get the appGet the app

Similar watches

Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.

All alternatives to the Supermarine 300M →All alternatives to the HD24 Automatic →
Explore the full catalog
DiscussionNot started

Also compared

Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.

Aigi Watches GruvebusvsHemel HD24 AutomaticBremont Supermarine 300MvsIslander Red October V2 Diver with Radiant Blue DialBremont Supermarine 300MvsWolbrook Skindiver AutomaticBremont Supermarine 300MvsRatio Skysurfer Pilot Leather RTS309 200MBremont Supermarine 300MvsGeckota Sea-Hunter Diver
Edit this comparisonMore diver comparisonsBest Diver Watches Under $500Explore more 39-41mm watches