Tokyo Flash Men's Quartz Black-ion-Plated-Stainless-Steel Casual Watch, Color:Black (Model: TOKYOFLASH-Star/PERFOR/IPB/MUL) Quartz movement Mineral crystal Case diameter: 29 mm Black-ion-plated-stainless-steel case; digital-with-multicolor-light-display dial; day-date-and-year functions Water resistant to 99 feet (30 M): withstands rain and splashes of water, but not showering or submersion