The Hexbug Aquabot 2.0 LED Twin Pack swimmers are equipped with hi-tech sensors so you can wake a sleeping fish in 3 different ways- by running your fingers through the water, touching the fish or tapping the fish bowl. Your kids can truly experience the fun of having a pet fish collection, without the hassle of cleaning up. The Aquabot 2.0 swimmers are equipped with hi-tech sensors that can wake a sleeping fish in three different ways; Wake a sleeping fish by simply running their fingers through the water, touching the fish or even tapping on the outside of the fish bowl. These underwater dwellers also exhibit an inner pulsating LED glow that illuminates the Angelfish and Hammerhead Shark and brings them to life in a fresh-new way. Powered by electro-magnetic propulsion and an automatic on and off sensor that activates when submerged in water, these aquatic fish propel around to explore their environment, swimming, diving and changing directions. After five minutes without activity, the Aquabots will go into sleep mode to conserve battery life. All of these design elements were carefully chosen by our engineers to get children to think about the science behind the robot. Now kids can truly experience the fun of having a pet fish collection, without all the messy clean-up; Size H15.5cm. Batteries required: 2 x button cell (included)(not included). For ages 3 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. Only to be used in water where the child is within its depth and under adult supervision. This toy does not provide protection.