I have no idea, when my 1st daughter was born it was just a wee plastic thing with stuff hanging from it that hung over the changing mat! Things are alot more advanced now and I have no clue which one to buy. I was looking at the Fisher Price Rain forest lights and melodies one as it goes with one of her cot mobiles but it is quite expensive so I don't really want to buy it if it's no good! Anyone got this one, or would you recommend another..... Thanks girls!