If we keep on with the nicknaming conventions, then these 2024 divers would be the “24MAS,” and Seiko is kicking off the brand new mannequin vary with a trio that features the SPB453 (black), the SPB451 (blue), and the particular version SPB455, which has a charcoal gray dial and bezel that’s matched by gold accents for the bezel, palms, and numerals. All three fashions have equivalent specs, measuring 40mm huge, 13mm thick, and 46.4mm lug to lug. For these dialed into the SPB143, the brand new fashions are 0.5mm extra slender, 0.2mm thinner, and 1.2mm shorter lug to lug — literal fractional refinements.
Regardless of being smaller in all three fundamental dimensions, these 2024 fashions up the water resistance from 200 meters to 300. That is because of a revised caseback design that’s each thinner and stronger.