【Soothing Music】: The music box plays 35 songs including 12 lullabies, 11 Christmas songs and 12 beautiful melodies while the mobile rotates slowly, but please note that it only plays a portion of the song, not the entire song. Compared to white noise, lullabies are faster for babies to relax and fall asleep. 【Adjustable】: The Baby Crib Mobile Music Box has multiple buttons to adjust the bed bell, pause or play music at any time. 【Portable Baby Sleep Machine】: With a diameter of just 3.4 inches and 3.6 ounces, the motor easily fits in a diaper bag or backpack. 【Unique Texture】: The unique texture allows the music box to fit into many wooden crib mobile arms, bohemian, natural and beautiful, decorating a more beautiful bedroom for your baby. The music box fits most crib mobile hangers, crib mobile arms. 2 AA batteries are required, not included. 【Safety Guarantee】: This baby musical mobile is made of environmentally friendly, non-toxic and durable ABS material to ensure the baby's safety if they bite on it. The battery compartment is covered and screwed to prevent accidental ingestion. You can attach this baby musical mobile to the crib with arms or brackets, and then hang toys over the hook on the musical mobile. Bracket and toys are not included but are available or you can make them yourself.