I bought this item for my 3 months old little girl and she absolutly loved it, still using it now every single day. It does everything it says on the box. I use it mainly on the cot when I put her down to sleep ( morning naps, lunchtime naps, evening bed time).
The reasons why I choose this one over other mobiles are:
1- 30 minutes of continuous music with different lullabies. it stops automatically at the end
2- You can easily take it along with you where ever you go as it is compact
3- the little characters captivates the attention of your baby as they are not too big. My little girl always smile at them
4- Great value for money for all you get
I would really recommend this item.