Seiko - PROSPEX DIVER - 1965 Heritage Diver's- SPB453J- 788451

Calibre
Calibre Type: 6R55 
Calibre Function:  Automatic with manual winding
Calibre Display:  Analogue

Case
Water Resistance: 300 M
Case Size:  40 mm 
Case Material: Stainless Steel
Band/Bracelet Type: Bracelet - Stainless Steel
Glass Type: Curved Sapphire Glass

Layout
Dial Colour:  Black
Hand Indicators: Hour,Minute,Seconds
Calendar Indicators: Date
Lumibrite: Hands & Markers
Dial Markers: Baton

Features
72 Hours Power Reserve (3 Days) Approx.
Automatic with manual winding
Curved sapphire crystal
Anti-reflective coating on inner surface
Divers 300m Water Resistant
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back