SJX Watches
Seiko Upgrades the “62MAS” Prospex Diver
A bestseller available in several variants to date, the modern-day “62MAS” now gets a substantive upgrade with the Prospex 1965 Heritage Diver’s Watch. The new diver is a direct successor of cal. 6R35-powered models, including the SPB143 and SPB239 of 2021. Released in two regular-production models (SPB451 and SPB453), plus a 100th anniversary special edition (SPB455), the latest Prospex “62MAS” improves on earlier models in three key areas: water resistance is now 300 m, the case is slightly more compact, and the movement is now the cal. 6R55 with a 72-hour power reserve. SPB451 Initial Thoughts As is usually the case with Prospex dive watches, the latest take on the 62MAS is robust and good looking. The new divers are safe bets as they rely on a proven formula – the classic 62MAS design with improved technical features. The SPB455 in particular stands out with its vintage-flavoured gilt accents. That said, the designs stay traditional; these are difficult to distinguish from their predecessors at a distance. A more distinctive design, perhaps with patterned dials that Seiko excels in, would have made these more compelling. SPB453 Importantly, the new trio also stays in the sub-US$1,500 price segment. Few dive watches in this price range have the same historical provenance, since Seiko was a pioneer in dive watch development. The regular production pair are only US$100 pricier than the SPB143 (and the special edition an extra US$200). The premium is easily ju...