When the energy level is low, the stopwatch seconds hands (1/100-second, 1/10-second, second) point to the 6 o’clock position.
If energy is completely depleted after that, all hands move to the 12 o’clock position and the watch stops.
When the stopwatch seconds hands (1/100-second, 1/10-second, second) point to the 6 o’clock position, sufficiently charge the battery.
When the stopwatch hands point to the 6 o’clock position, the stopwatch will not operate. (This is not a malfunction.)
If the energy is depleted while the stopwatch is operating, the measurement may be reset.