Commemorating Seiko's 145th anniversary, this Prospex limited edition draws inspiration from the iconic 1965 diver's watch, blending heritage with a fresh, sophisticated aesthetic. The silver-white dial is accented by a blue bezel insert and seconds hand, a nod to the signature "Seiko Blue" established in the 1960s.

Powered by the in-house 6R55 automatic movement with a 72-hour power reserve, the 40mm stainless steel case offers 300m water resistance for professional diving. A curved sapphire crystal with anti-reflective coating and LumiBrite on the hands, indices, and bezel ensure exceptional legibility in all conditions.

Brand	Seiko
Model Number	HBC005J1
Collection	Prospex
Movement Type	Automatic with manual winding
Calibre Number	6R55
Power Reserve	Approx. 72 hours (3 days)
Precision	+25 to -15 seconds per day
Jewels	24
Functions	Stop second hand function
Case Material	Stainless steel
Case Diameter	40.0mm
Case Thickness	13.0mm
Lug-to-Lug	46.4mm
Distance Between Lugs	20mm
Crystal	Curved sapphire crystal
Crystal Coating	Anti-reflective coating on inner surface
LumiBrite	LumiBrite on hands, indices and bezel
Clasp	Three-fold clasp with secure lock & push button release, solid & slide adjuster
Water Resistance	300m / 1000ft diver's
Magnetic Resistance	4,800 A/m
Features	LIMITED EDITION on the case back, Unidirectional rotating bezel, Screw-down crown, Screw case back
Product Type	Diver Watch
Gender	Men's
Dial Colour	Silver-White
Bezel Colour	Blue
Band Material	Stainless Steel
Display Type	Analogue

Seiko Prospex 145th Anniversary Limited Edition Automatic Sea Watch