Dancing DNA - Kinetic Mobile - With Multi-colored Polymer Balls on the Ends - Enhances and Enlivens Any Space: Home, Office, Kid's Room, Waiting Area, Treatment Room, Breakfast Nook, Solarium, Dorm Room or Class Room. Enjoyed and Valued By All - Young and Old! Includes Mobile, Motor and Instructions. Uses 3 Aa Batteries (Not Included). Measures About 54" When Hanging. Warning: Possible Choking Hazard. Keep Out of Reach of Small Children. Care and Feeding: Gently Dust to Keep It Clean. Change Top to Bottom, Bottom to Top Every Six Months or So. If Taking It Down and Moving It, Grasp Not Just By Hook, but By Hook and Again 6" on Neoprene Spine Below Hook. To Store, Roll up with Tissue Paper As a Sushi Roll, Make Sure That the Spine Is Not Twisted. Indoor Use Only, Includes Twirling Machine Motor