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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