Casio Kids' LDF-52-1ADR Poptone Digital Display Quartz Black Watch Dual Time, 50M Water Resistant, EL Backlight, 1/100 second stopwatch, Measuring modes: Elapsed time, split time, 1st-2nd place times Daily alarm, Hourly time signal, Full auto-calendar, 12/24 hour formats, Front buttons, Sporty color selection Quartz Movement Case Diameter: 23.6mm Water Resistant To 165 Feet