Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGA493, is a Spring Drive watch with a 40 mm steel case and is a limited edition of 500 pieces. Case thickness is 12.5 mm, with a lug-to-lug measurement of 46.2 mm; water resistance is rated to 100 metres. Calibre 9R65 is Spring Drive with 30 jewels and approximately 72 hours of power reserve. The watch has a date display, a power reserve indicator, and a see-through case back. A folding clasp with push button release closes the steel bracelet. The design takes inspiration from the Japanese sword and the forging of its steel. The dial is covered by a dual-curved sapphire crystal with an inner anti-reflective coating.