Grand Seiko
Grand Seiko Heritage Watch (SBGR307G)
FEATURES
The first 9F quartz GMT model for Heritage Collection
Caliber 9F86 is based upon, and has all the precision and durability attributes of, the original 9F but incorporates a GMT function that allows the watch’s precision to be maintained when the hour hand is adjusted independently. This is made possible by new components that have been created especially for this movement.
The watch allows you to move the hands without stopping the watch when setting it to local time. This achieves a convenience in which excellent accuracy of the quartz watch won’t be lost.
Exterior
Case Material : Stainless steel with ceramic bezel
Glass Material : Dual-curved sapphire crystal
Glass Coating : Anti-reflective coating on inner surface
Lumi Brite : Lumibrite on hands and indexs
Case size : Diameter 40.5mm × Thickness 14.7mm
Clasp type : Three-fold clasp with push button release
Movement
Calibre no. : 9R66 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 : 20 bar
Magnetic resistance : Magnetic resistance
Weight : 172.0 g
Other details / Features :
・24-hour hand (dual time display function)
・30 jewels
・Calendar-linked time difference adjustment function
・Case back with lion emblem
・Date display
・Power reserve display
・Screw case back
・Screw-down crown
・Stop seconds hand function
