Grand Seiko Heritage

Classical styled Spring Drive watch

This simply finished model with no crown guard is driven by a Grand Seiko's unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch. In Spring Drive, the second hand moves in perfect glide motion, reflecting the natural and continuous flow of time itself. It has a 72-hour power reserve, and a power reserve indicator on the bottom left of the dial.

Exterior
Case Material : Stainless steel
Glass Material : Box shaped sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Case size : Diameter 40.2mm × Thickness 12.8mm
Band Material : Crocodile leather
Clasp type : Three-fold clasp with push button release

Movement
Caliber no. : 9R65 Instructions
Movement Type : Spring Drive
Power reserve : Approx. 72 hours(3 days)
Accuracy : ±1 second per day / ±15 seconds per month (average)

Functions
Water resistance : 10 bar
Magnetic resistance : Equipped
Weight : 85.0 g
Other details / Features :
・30 jewels
・Case back with 6 screws
・Case back with lion emblem
・Date display
・Power reserve display
・See-through case back
・Stop second hand function