Current Production
Prospex 1965 Heritage Diver
SEIKO SPB453
MSRP
$1,300 USD
Verified Aug 17, 2026
Case diameter40 mm
Lug-to-lug46.4 mm
Thickness13 mm
Lug width20 mm
Case materialStainless steel with super-hard coating
BezelStainless steel unidirectional rotating bezel with aluminum insert
CrystalCurved sapphire crystal with anti-reflective coating on the inner surface
Water resistance300 m
MovementSeiko in-house automatic with manual winding, 21,600 vph, 24 jewels, stop-second hand. Accuracy +25 to -15 sec/day.
Calibre6R55
Power reserve72 hours
DialBlack
Bracelet or strapStainless steel bracelet, three-fold clasp with secure lock, push-button release and extender (20 mm lug width)
Specifications as published by Seiko →
Last verified Aug 17, 2026