The TinyTuna will adjust its flopping slower or faster according to the motion around it. If it detects that its being played with, it'll flop faster. If it detects no motion, it'll slow down and eventually stop.
Saving energy for a more enjoyable play time!
TinyTuna comes with a USB charger, and a built in battery that lasts for days after a full charge. This would be enough time to entertain your cat and relieve the stress throughout the day.