World time 29 time zones (48 cities), daylight saving on/off Moon data Moon data (moon age of the input data, moon phase graph) Tide graph Tide graph (tide level for specific date and time) Stopwatch 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Other: 5-second countdown auto start Timer 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) Others: Auto-repeat, progress beeper Alarm/hourly time signal Hourly time signal Multi-function alarms 3 independent multi-function alarms (2 one-time alarms and 1 snooze alarm) Flash alert feature Flash alert Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer progress beeper, and stopwatch auto start Light Electro-luminescent backlight Auto light switch, afterglow Light color EL:Blue Green Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy Accuracy: ±15 seconds per month Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, month, date, day