Invicta Men's 1792 "Specialty" 18k Gold Ion-Plated Watch Band Material: Polyurethane To change time and date, unscrew outer cap and remove it, then unscrew the crown and pull out. Use the crown to change the date and time. 18k gold ion-plated watch with day and date subdials and screw-down cap with chain Japanese Quartz movement with analog display Protective Flame-Fusion crystal dial window Features black silicone strap, luminosity, unidirectional bezel Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving