Mission: Cross The Laser Field Before It's Too Late!Chrono Bomb is a super secret spy mission where kids use the included clamps and 27.5-ft. string to create a “laser” field to crawl through. At the end of the maze is the bomb, counting down…tick, tick, tick! So, you have to hurry, carefully, and make it to the end to defuse the bomb and be the hero! Play over and over again, building new courses each time or trying to beat your or your friend’s time! Ages 7 & UpRequires three AAA batteries, not included.