CASIO G-SHOCK GA-100-1A1ER

World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping

1/1000-second stopwatch Measuring capacity: 99:59’59.999” Measuring modes: Elapsed time, lap time, split time Others: Speed (0 to 1998 units/hour), Distance input (0.0 to 99.9) Mach indicator (speed exceeding 1225 units/hour)

Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat

5 daily alarms (with 1 snooze alarm)

Hourly time signal

LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

LED:Amber

Full auto-calendar (to year 2099)