To ensure visibility in dark environments, both displays of the analog-digital watch are illuminated at the push of a button. The world time function shows the time in up to 29 different time zones. Elapsed time, lap time, and end 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 one-second increments 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 five independent alarms, which are particularly useful for daily medication intake or keeping regular appointments. At the push of a button, the hands move to reveal the digital displays, allowing for easy reading of functions like the stopwatch or the day of the week. 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. If desired, the key tones can be turned off using the mode button. After turning off, there will be no beep when switching from one function to another. However, set alarms or countdown timers remain active even after the key tones are turned off.