The Casio LA20WH2AEF is a lightweight digital watch with a clear display showing time, date, and day. It features a 1/100-second stopwatch, daily alarm, hourly signal, and LED light for easy reading. With an auto-calendar, 12/24-hour format, water resistance, and a 5-year battery life, it’s perfect for everyday use.SpecificationsCase size : 34.5 × 30.4 × 8.6 mmWeight : 16 gCase and bezel material : ResinBand : Resin BandWater resistance : Water ResistantPower supply and battery life : Approx. battery life: 5 years on CR1616ExteriorGlass : Resin GlassCompatible band size : 125 to 180 mmWatch FeaturesStopwatch : 1/100-second stopwatch, Measuring capacity: 59'59.99"Measuring modes: Elapsed time, split time, 1st-2nd place timesAlarm/hourly time signal : Daily alarm, Hourly time signal Light : LED light Light color : LED:AmberCalendar : Auto-calendar (auto calendar set at 28 days for February)Accuracy : ±30 seconds per monthOther features12/24-hour formatRegular timekeeping:Hour, minute, second, pm, date, day