Roberto Bianci Men's 1861_BLK "Eleganza" Chronograph And Day And Date Watch Precise Swiss-quartz movement Scratch-resistant-sapphire crystal Case diameter: 37 mm Stainless-steel case; black dial; day-and-date functions; chronograph functions Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion