Casio — Edifice / Quartz Chronograph — Sapphire · Stainless · 100m. Casio Edifice EFB-730D-2BVUEF — WatchNation. Edifice EFB-730D-2BVUEF. The dynamic dial composition gives the EFB-730D-2BVUEF a sense of precision and motion appropriate to the Edifice collection's racing brief, while remaining clean enough to wear across casual and smarter occasions.