Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGR253, has a 37 mm steel case. Calibre 9S65 is self-winding with 35 jewels and approximately 72 hours of power reserve. The lug-to-lug measurement is 44.6 mm, and case thickness is 13.3 mm; water resistance is rated to 100 metres; magnetic resistance is 4,800 A/m. Above the dial is a dual-curved sapphire crystal, with anti-reflective coating on its inner surface. A folding clasp with push button release closes the steel bracelet. Movement precision is +5 to -3 seconds per day. The watch has a date display and a see-through case back.