Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGR289, has a 37 mm steel case. Approximately 72 hours of power reserve is provided by self-winding calibre 9S65, with 35 jewels. The dial is covered by a dual-curved sapphire crystal with an inner anti-reflective coating. The crocodile leather strap has a folding clasp with push button release. This model has a date display and a see-through case back. Movement precision is +5 to -3 seconds per day. The 13.3 mm case thickness accompanies a lug-to-lug measurement of 44.6 mm; water resistance is rated to 100 metres; magnetic resistance is 4,800 A/m.