Casio Men's 'Tough Solar' Quartz Stainless Steel and Resin Sport Watch, Color:Blue (Model: STL-S100H-2A2VCF) Solar-powered watch in black featuring 12- and 24-hour time and LED light-up display with afterglow 51.4 mm stainless steel case Quartz movement with digital display Features five daily alarms, world time, 31 time zones, stopwatch with 120-record memory, and full auto-calendar Resin band with buckle closure Water resistant to 100 m (330 ft)