I'm sorry I should have included that information. It requires 3 aaa batteries. But the good thing the balls move with or with out batteries so its a fun toy if they die and it takes some time to replace them.
oh yes, my son got it when he was 9 months but just never used it, his cousin has one just like it and she will be 3 in july and she still loves it she has been playing with hers since she was about 18 months.
If it's not at Walmart go to little tikes.com I believe it's called the activity garden rock n spin... I don't know why I listed it as sit and grow I just forgot the name :)