{"product_id":"grand-seiko-heritage-automatic-spring-drive-3-day-sbga259-p-18400008","title":"Grand Seiko Heritage Automatic Spring Drive 3-Day SBGA259","description":"\u003cp\u003eThe SBGA211 is powered by Spring Drive, Grand SeikoÕs unique caliber, which combines the motive force of a mainspring found with the high precision of a quartz watch.\u003c\/p\u003e \u003cp\u003eThe case and bracelet are made with high-intensity titanium, providing a scratch and corrosion resistant finish, making it 30% lighter than stainless steel and a pleasure to wear.\u003c\/p\u003e \u003cp\u003eThe blue steel second hand moves smoothly in glide motion, and glows over the contrasting pure white face to create an even more dramatic movement.\u003c\/p\u003e \u003cp\u003eIt has a 72-hour (3-day) power reserve, and a power reserve indicator on the bottom left of the dial.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCalibre 9R65:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eGrand Seiko unveiled Spring Drive in 1999, but its lack of a sufficiently effective automatic winding mechanism and 72-hour power reserve prevent its adoption in the Grand Seiko line. After a further four years of development, the first Grand Seiko 9R Spring Drive was created.\u003c\/p\u003e \u003cp\u003eThe winding system and drive time were improved from the existing 48-hour manual winding system to an automatic 72-hour power reserve. The automatic winding mechanism uses Seiko's original Magic Lever mechanism developed in 1959, but with improved productivity, maintainability, and durability to enhance winding efficiency.\u003c\/p\u003e \u003cp\u003eCalibre 9R65 is currently the most standard of the 9R Spring Drive movements, and is used in many Grand Seiko models.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWinding mechanism\u003c\/strong\u003e\u003cbr\u003eAutomatic with manual winding\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003cbr\u003e+1 second per day\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePower reserve\u003c\/strong\u003e\u003cbr\u003eApproximately 72 hours\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNumber of jewels\u003c\/strong\u003e\u003cbr\u003e30 jewels\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003cbr\u003e- Power reserve indicator\u003cbr\u003e- Date display\u003c\/p\u003e","brand":"Pulse Timepieces","offers":[{"title":"Default Title","offer_id":47312327508212,"sku":"WA-JLC-135","price":100000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/1192\/8052\/files\/18400008_1.jpg?v=1765832909","url":"https:\/\/pulsetimepieces.com\/products\/grand-seiko-heritage-automatic-spring-drive-3-day-sbga259-p-18400008","provider":"Pulse Timepieces","version":"1.0","type":"link"}