PROSPEX 1965 REISSUE 

The Seiko SPB143 is a veritable fan favorite among lovers of Seiko dive watches. And that’s for good reason. It combined the mid-range quality we know from this level of Seiko offerings with subtle, timeless dive-watch aesthetics. Today, Seiko releases the spiritual successors to this watch. These are the standard-production SPB451 (blue dial) and SPB453 (black dial) as well as the special-edition SPB455 (with gilt-tone accents). The last one celebrates 100 years of the Seiko name on watch dials.

If we stick to the nicknaming conventions, then these 2024 divers will be the "24MAS," and Seiko is kicking off the new model range with a trio that includes the SPB453 (black), the SPB451 (blue), and the special edition SPB455, which has a charcoal grey dial and bezel that is matched by gold accents for the bezel, hands, and numerals. All three models have identical specs, measuring 40mm wide, 13mm thick, and 46.4mm lug to lug. For those dialed into the SPB143, the new models are 0.5mm more narrow, 0.2mm thinner, and 1.2mm shorter lug to lug – literal fractional refinements.