I'm selling this because I no longer need it. ① When you pull the mandarin orange down, the strawberry and banana fall down. ② When you press the purple ball, the green ball floats up. Conversely, when you press the green ball, the purple one floats up. ③ The transparent ball on the far right can be spun. It doesn't require batteries and is compact, so it can be played with from 0 years old!! There are no small parts that easily come off. I received a bubble wrap toy as a gift, but since I have a large one, it's included as a bonus. Thank you for looking.