Grand Seiko
Heritage Collection
Exterior +
High-intensity titanium 7
Stainless steel 41
Ever brilliant steel, Caseback: Ever brilliant steel and sapphire crystal 6
High intensity titanium /ceramic with ceramic bezel 1
Stainless steel / 18k yellow gold case back 1
Band Material +
Crocodile leather 4
Ever brilliant steel 6
High-intensity titanium 3
Stainless steel 33
Glass Coating +
Anti-reflective coating on inner surface 56
Glass Material +
Sapphire crystal 6
Box shaped sapphire crystal 5
Dual-curved sapphire crystal 41
Movement +
Automatic with manual winding 26
Manual winding 2
Quartz 12
Spring Drive 14
Water Resistance +
10 bar 54
11 bar 1
±15 seconds per month (±1 second per day) 1
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