Description 1.Light music helps your baby easier fall asleep 2.Music may even help strengthen premature babies 3.Music plays a crucial role in ｀wiring¨ your baby¨s brain for learning. 4.Listening to music will help teach your infant about patterns and sequence、 and about rhythm、 beat and tone which are useful for problem-solving and reasoning. 5.Early music exposure can help promote critical listening skills、 language and literacy、 creativity and coordination Benefits: 1.Make your own musical mobile holder 2.Hook Rotates while playing music、you can pause while playing. 3.A cute gift for baby、friends and for yourself. Features: 1.It's a small world 2.Frere jacques 3.Twinkle twinkle little star 4.Brahms lullaby 5.Mary had a little lamb 6.Schubert's lullaby 7.Mozart's Lullaby 8.La le lu 9.Old macdonald had a farm 10.Rock a bye baby 11.Let me be your teddy bear 12.Hush、 little baby Melody: Color:White Material: ABS And Metal Music Box Inside Size: About 70x114mm Playing speed: 12-20" Full playing time: 2-3 Power by 2 x AA batteries(not included) Red button: for on/off Green button: for next song. Specifications: Baby Crib Holder not included. 1 x Baby Crib Bell (Batteries not included)