Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGA375, is a Spring Drive watch with a steel case measuring 40 mm in diameter. Calibre 9R65 is Spring Drive with 30 jewels and approximately 72 hours of power reserve. Case thickness is 12.5 mm, with a lug-to-lug measurement of 46.2 mm; water resistance is rated to 100 metres. The blue dial has faceted hands and indices, with a double-width index at twelve o'clock. This model 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 dial is covered by a dual-curved sapphire crystal with an inner anti-reflective coating.