1) many different kinds of wave 2) fit for all kinds of water pool 3) energy saving 4) environment-friendly WOW wave ball is a part of the pool equipments, likes the slide, is very much appreciated by people.let your pool sparkle with Wave-it ,give it rhythm,bring it to life...it will give it back to you in hundredfold...And it is so easy to handle:just choose the kind of waves you want and enjoy ...