• 3-in-1! -Musical crib mobile with motorized action and up to 20 minutes of lullaby music -Linkable stroller mobile for on-the-go -Take-along musical birdie toy “knows” when it’s on the go & automatically switches to baby-activated music mode with short, fun tunes. • Adorable bird, elephant, tiger & lion friends comfort & entertain baby • Easily attaches to almost any crib or stroller (not designed for use in playpens). • Birdie toy has built-in carry handle—great for toddler take-along, too • Requires 3 AA batteries