Straight from the Casio Vintage Collection comes a tried and true style that always remains in fashion. With its daily alarm, hourly time signal and auto calendar, you'll never need to worry about missing an appointment again. Case / bezel material: Resin Stainless Steel Band Adjustable Clasp Resin Glass Black ion-plated band Black IP 50-meter water resistance LED BacklightAfterglow Flash alertFlashes with buzzer that sounds for alarms, hourly time signal 1/100-second stopwatchMeasuring capacity:00'00"00~59'59"99 (for the first 60 minutes)1:00'00~23:59'59 (after 60 minutes)Measuring unit:1/100 second (for the first 60 minutes)1 second (after 60 minutes)Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)Other: Auto-repeat Multi-function alarm Hourly time signal Full auto-calendar (to the year 2039) 12/24-hour format Regular timekeeping: Hour, minute, second, pm, month, date, day Accuracy: ±30 seconds per month Approx. battery life: 3 years on CR2016 Size of case: 38.9×35×9.4mm Total weight: 49g