Grand Seiko Sport

The Grand Seiko Sport, reference SBGH289, is a dive watch with a 43.8 mm steel case. Self-winding calibre 9S85 provides approximately 55 hours of power reserve and has 37 jewels. The case measures 14.7 mm thick and 51 mm lug-to-lug, with a water-resistance rating of 200 metres. The watch has a date display, with LumiBrite on the hands and indices. A steel bracelet closes with a folding clasp with a safety lock. Magnetic resistance is 4,800 A/m, and the case has a screw-down crown. An anti-reflective coating covers the inner surface of the sapphire crystal.