CASIO G-Shock Digital Black Resin GD100-1A

Accuracy Accuracy: ±15 seconds per month Alarm/hourly time signal 5 alarms (daily or one-time) Hourly time signal Calendar Full auto-calendar (to year 2099) Flash alert feature Flash alert Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm Light LED backlight Auto light switch, selectable illumination duration, afterglow. Mute feature Button operation tone on/off Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, month, date, day Stopwatch 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Timer Countdown timer Measuring unit: 1/10 second Input range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) World time Multi Time (4 different cities) World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping