Seiko Prospex Sea Analog Watch SPB451J

The Seiko Prospex SPB451J1 is a heritage-inspired automatic diver’s watch that reinterprets Seiko’s original 1965 professional diver. It features a deep scuba-blue dial and matching unidirectional rotating bezel in a 40 mm stainless steel case with curved, anti-reflective sapphire crystal for excellent legibility. Powered by Seiko’s 6R55 automatic movement with a 72-hour power reserve, it delivers reliable mechanical performance and a stop-second function. With 300 m water resistance, LumiBrite hands and markers, screw-down crown, and a secure three-fold clasp, this watch blends vintage character with robust capability for diving and everyday wear.