Shock resistant; Bluetooth® mobile link; CASIO WATCHES app connectivity; Multi Band 6 time calibration; World Time; stopwatch; countdown timer; 5 daily alarms including 1 snooze alarm; hourly time signal; LED backlight/Super Illuminator; full auto LED light; selectable 2- or 4-second illumination duration; afterglow; full auto-calendar through 2099; button operation tone on/off; power saving; low battery alert; 12/24-hour format; date/month display swapping; day display selectable in six languages; regular timekeeping with hour, minute, second, PM, month, date, and day; home city/World time city swapping; daylight saving time on/off; auto summer time (DST) switching