Description Micro SD Card-Powerful Function Twelve Tunes preloaded in the memory cards(please note that it plays just a part of the song, not the entire song): 1) IT IS A SMALL WORLD 2) FRERE JACQUES 3) BRAHMS LULLABY 4) TWINKLE LITTLE STAR 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 Install it on baby crib/bed with arms/bracket, hang toys overthe hooks. The toys will rotate while music playing. There are 2 operation methods: 1,Using buttons on music box; 2,Using remote controller to operate. Specification Music Box Dimensions(L*W*H): 3.5in*3.5in*1.38in Weight: 4.37oz Color: White Micro SD Card Capacity: 128M(12 tunes included) Power Source: 2 AA batteries(not included) Support USB Data Transmission: YES 12 tunes already preloaded, you can download anyother music or audio stories at you will via USB cable. Remote Controller Dimensions: 1.5in*3.38in*0.25in Weight:0.42oz Color:White PowerSource: CR2025 OperatingVoltage:DC3V WirelessRemote: Infrared Ray RemoteDistance: 3-5 meters Benefits 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 Note Brackets/arms and toys are not included but available in the market. Package Included 1 x Baby Musical Mobile Music Box 1 x 128M Micro SD Card 1 x USB cable(for data transmission) 1 x User Manual 1 x Remote Controller