Grand Seiko Heritage
Exterior:
Stainless steel
Case back specifications:
See-through & Screw case back
Glass material:
Box shaped sapphire crystal
Coating:
Anti-reflective coating on inner surface
Case size:
Diameter 30.0mm Lug-to-lug 36.2mm Thickness 10.5mm
Clasp:
Three-fold clasp with push button release
Movement:
Automatic with manual winding