Seiko Prospex 1968 Heritage Diver’s Mechanical Automatic GMT Watch Seiko Diver’s Watch 60th Anniversary Limited Edition "Rough Sea"
SPB509
Limited Edition of 6,000 Pieces
SPB509 Specification:
Movement
Caliber: 6R54
Type: Mechanical Automatic with manual winding
Accuracy: +25 to -15 seconds per day
Duration: Approx. 72 hours (fully wound)
Jewel: 24
Functions: 24-hour hand (dual time display function); Stop second hand function
Exterior
Case Material: Stainless steel (Bezel: Stainless steel with ceramic display)
Case Size: Thickness:13.3mm; Diameter:42.0mm; Lug-to-lug:48.6mm
Crystal: Sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
LumiBrite: LumiBrite on hands, index(es) and bezel
Clasp: Three-fold clasp with secure lock & push button release, solid & slide adjuster
Distance between lugs: 20
Other Details
Water Resistance: 300m / 1000ft diver's
Magnetic Resistance: 4,800 A/m
Weight: 188.0g
LIMITED EDITION on the case back
Serial number engraved on the case back
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back
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