Wristwatch with EOL (End of Life) indicator

EOL (End of Life)

— a function found in quartz watches (see "Movement type") with an arrow dial. In fact, End Of Life is an indicator that signals a critically low battery. It works as follows: when the charge is running out, the second hand begins to “jump” immediately through 2 or 4 divisions, moving not once a second, but once every 2 or 4 seconds, respectively. Such a warning is clearly visible to the user, and the slow movement of the arrow additionally saves battery power, increasing the time to find and replace the battery.