Seiko SPB143J1 Prospex Automatic Diver's Stainless Steel Men's Watch SPB143J1

The Seiko Prospex SPB143J1 revives the spirit of Seiko’s first diver from 1965, bringing timeless heritage into a contemporary 40.5 mm stainless steel case. Powered by the in-house Calibre 6R35 automatic movement, this watch delivers an impressive 70 hours of power reserve and reliable precision of +25/-15 seconds per day. The resilient case, finished with Seiko’s DiaShield hard coating, pairs beautifully with a curved, anti-reflective sapphire crystal, echoing the vintage diver aesthetic while ensuring durability. Its sunburst anthracite gray dial, framed by a black unidirectional bezel, features bold LumiBrite indices and hands for maximum legibility underwater and in low light, alongside a date window discreetly positioned at 3 o’clock. The 200 m water resistance, screw-down crown, and secure three-fold clasp with diver’s extension make it ready for aquatic adventures. With refined dimensions suitable for both sporty and formal occasions, the SPB143J1 exudes versatility and elegance. Enthusiasts appreciate its blend of historical design cues—such as drilled lugs and vintage case lines—with modern functionality, making it a standout daily diver from Seiko’s respected Prospex line that seamlessly complements any strap or style.