Description This baby music mobile is made of ABS, fit for babies under 5 year's old, which can be installed on baby's bed with arm. The toys will rotate while music playing if it is hung over the hooks. This baby crib mobile music box comes with 6 stickers which have cute cartoon animals printed. You can stick them on the surface of the music box as you like. Install it on baby crib/bed with arms/bracket, hang toys over the hooks. The toys will rotate while music playing. Specification 1.Product Dimensions(L*W*H): 3.5in*3.5in*1.38in 2.Product Weight: 4.37oz 3.Color: White 4.Micro SD Card Capacity: 128M(12 tunes included) 5.Power Source: 2 AA batteries(not included) 6.Support USB Data Transmission: YES 7. There are 12 tunes already preloaded before shipping, you can download anyother music or audio stories at you will via USB cable. 8. 6 cute little cartoon animal stickers, diameter is 6.5CM 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 6. Lovely and colorful stickers let your baby exercise the perception of their eyes by enhancing cognitive-ability of figures and colors. Note Brackets/arms and toys are not included but available in the market. Package Included 1x Baby Musical MobileMusic Box 1x 128M Micro SD Card 1x USB Cable(for data transmission) 1x User Manual 6x DIY Stickers