Grand Seiko Heritage
External
Exterior: 18K gold Case back: 18K gold + sapphire glass
Back cover specifications: transparent screw back cover
Case material: box-shaped sapphire
Coating: internal anti-reflective coating
Case size: width 38.8mm height 43.7mm thickness 10.4mm
Strap width: 19mm
Strap material: crocodile leather
Movement
Movement: 9SA4 Description
Drive system: mechanical manual winding