
Grand Seiko Heritage Collection SBGR317
Grand Seiko Heritage Collection SBGR317
Exterior: stainless steel Back cover: stainless steel and sapphire glass
Glass material: dual-curved sapphire
Coating: inner surface anti-reflective coating
Case size: 40mm wide x 13mm thick
Arm circumference length (maximum): 195mm
Middle retention: one-push triplicate method
Movement: 9S65
Drive system: mechanical, automatic (with manual winding)
Operating time: lasts about 72 hours (about 3 days) when wound up to the maximum
Accuracy: Static accuracy: average daily difference +5 seconds to -3 seconds (mobile accuracy: average daily difference +8 seconds to -1 second)
Anti-magnetic resistance: Yes
Weight: 156.0g
Other Features
See-through back
Screwback
Screw Locking Style Flow
With calendar (date) function
Number of stones 35 stones
Second hand stop function
With a lion's crest on the back cover