CASIO G-Shock Rugged Digital Black Resin GD010-1D

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) Light LED backlight (Super Illuminator) 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 Countdown range: 24 hours Countdown start time setting 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