Grand Seiko Heritage 9R Spring Drive SBGA301J

Grand Seiko Spring Drive Mens Watch SBGA301J

This model is equipped with Spring Drive, which uses the mainspring used in mechanical watches as the power source and enables the same high precision as quartz watches. The second hand slides on the jet-black dial is impressive with the sweeping movement created by the Spring Drive mechanism.

Exterior

Case Material	Stainless Steel
Glass Material	Sapphire
Case Size	Diameter: 40.5mm
Case Colour	Silver
Band/Bracelet	Bracelet - Stainless Steel
Band Colour	Silver
Dial Colour	Black
Hand Indicators	Hour, Minute, Seconds
Calendar Indicators	Date
Lumibrite	Hands & Hour Markers
Dial Markers	Batons
Crown	Screw Down

Movement

Calibre Number	9R65
Calibre Type	Spring Drive - Powered By The Movement of the Wearer
Calibre Function	Analogue - 3 Hands
Accuracy	+/-15 seconds a month (at normal temperature range (-10° and 60°)
Power Reserve/Battery Life	72 Hour Power Reserve
Display	Analogue

Functions

Water Resistance	100 Metres
Power Reserve Indicator	Yes