To ensure visibility in dark environments, the watch display is illuminated by a LED at the push of a button. The hands and indices are coated with a fluorescent material that glows in the dark after being exposed to a light source. This database conveniently holds 30 records for names and phone numbers. Each record can consist of up to 8 characters of text and up to 12 digits. The world time function displays the time in up to 29 different time zones. For athletes and anyone who needs precision: elapsed time, split time, and finish time are measured with an accuracy of hundredths of a second. The watch can measure time for up to 24 hours. The countdown timer helps remind you of special or recurring events by emitting an acoustic signal at the set time. The time can be set in seconds and up to 24 hours in advance. The daily alarm reminds you of recurring events with an acoustic signal at the set time. This model features three independent alarms that can be flexibly set for important dates. After stopping the alarm signal, it will automatically sound again after a few minutes. Once set, the automatic calendar always displays the correct date. The time display can be set to either a 12-hour or 24-hour format. In 12-hour mode, a "p" in the display indicates the second half of the day, from 12 noon to 11:59 PM.