Grand Seiko Sport

The Grand Seiko Sport, reference SBGA461, is a Spring Drive dive watch with a 44.2 mm steel case. Calibre 9R65 has 30 jewels and approximately 72 hours of power reserve. The case measures 14 mm thick and 51 mm lug-to-lug, with a water-resistance rating of 200 metres. A sapphire crystal has an anti-reflective coating on the inner surface. The watch has a date display and a power reserve indicator. A steel bracelet closes with a folding clasp with a safety lock. LumiBrite is applied to the hands and indices, and magnetic resistance is 4,800 A/m.