PURPOSE: To perform the life display of a battery capable of being read at a look and easy to view, by displaying the finish of katakana by providing an oblique segment to a display segment with a bisected rectangular shape used in displaying time.

CONSTITUTION: An oblique segment directing to a left upward direction from a right lower direction is provided to the desired figure of a display segment with a bisected rectangular shape for performing time display and the finish of katakana is displayed by a control signal responding to the life detection of a battery to make it possible to perform the life display of the battery capable of being read at a look and easy to view.