
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.
The Bremont Supermarine 300M (ref. sm40-nd-ss-gn-b) is an automatic diver watch, with a 40mm 904l stainless steel case, 12mm thick, powered by the BE-92AE movement. Water resistance is rated to 300m, under a sapphire crystal. Manufacturer MSRP is $3,550. The dial color is green.
The matchups people make with the Bremont Supermarine 300M most — open one to see it side by side.