The Casio G-SHOCK G-STEEL GSTB100GB1A9 watch is a shock-resistant watch with a solar powered movement contained within a 58.1mm x 53.8mm gold toned ion-plated stainless steel case. The watch can maintain accurate timekeeping from anywhere in the world by connecting to your smartphone with the G-SHOCK Connected app. Other features include dual world time, 1-second stopwatch, a countdown timer, daily alarm, battery level indicator, full auto-calendar, date display, a day indicator, and a phone finder button. The black resin band is secured by a deployant clasp. Water resistant to 200 meters.