my son absolutely love this mobile . he 'll stare up at the face of the little creature -lrb- a lizard , parrot , monkey , and bug -rrb- and giggle like crazy , it be hilarious to watch . what I really love about it be that it be super bright and colorful ; my son have no trouble focus on it at 4 month old . it be also easy to put together and simple to attach to the crib . the music box part play 18 minute of classical tune and its volume setting seem adequate to I . the mobile portion be detachable for when baby do not need that bit anymore , and the music box have a nightlight -lrb- not too bright -rrb- which have prove useful . all in all I love this product and definitely recommend it .