Features: shock resistant (g-shock) magnetic resistant led light auto light switch, selectable illumination duration, afterglow world time 29 time zones (48 cities + coordinated universal time), daylight saving on/off 1/100-second stopwatch mach indicator (speed exceeding 1225 units / hour) countdown timer measuring unit 1 second 5 independent daily alarms (4 one-time alarms and 1 snooze alarm) hourly time signal full auto-calendar (to year 2099) 12/24-hour format regular timekeeping analog 2 hands (hour, minute (hand moves every 20 seconds)) digital hour, minute, second, pm, month, date, day accuracy +/-15 seconds per month size of case 55.0 x 51.2 x 16.9 mm weight 70g