This watch is to be a tribute to the original SM300 watches. If we increase lugs to 22mm then the looks of lugs and overall watch will be totally different from the original one unless diameter increases to 44mm.
Then we would have a watch looking more a Planet Ocean or the current Seamaster series something we do not want to.
A ceramic insert costs less to make but won't look the same specially as the original SM300 had an acrylic bezel insert so logic is to use sapphire insert.
Lume will be vintage color with thick layers.
Watch will be powered by a Miyota 9015, yes.
Then we would have a watch looking more a Planet Ocean or the current Seamaster series something we do not want to.
A ceramic insert costs less to make but won't look the same specially as the original SM300 had an acrylic bezel insert so logic is to use sapphire insert.
Lume will be vintage color with thick layers.
Watch will be powered by a Miyota 9015, yes.