The Seiko Prospex Mar SPB375, with a 45mm case, boasts a stainless steel case and a bezel, also made of steel, combined with a blue ceramic plate. The dial showcases dark blue lines, reflecting the surface of the sea when immersed, and its hands, featuring white, gray, and blue tones, are equipped with lumibrite, providing the piece with light in the darkness. The automatic movement with manual winding capability gives the piece up to seventy hours of power reserve. Among the features of the piece, you'll find the 'Special Edition' engraving on the case back, a unidirectional rotating bezel, screw-down crown, three-fold clasp with secure lock, and a screw-down case back.