The Mood Sphere can be set to 7 different colors or a slow transition from color to color. Press the button on the bottom of the centerpiece to activate. Toys play a crucial part in development of a child. Toys as simple as wooden blocks or numbered puzzle, develops cognitive and physical skills. Complex puzzles, remote control cars, bubble guns helps learn and analyse cause effects and spatial relationships. Babies tend to play more and more with such toys and make themselves happy. Children's attitude towards their toys nurtures them big way. Specifications: Diameter: 3 in. LED Color: Rainbow Batteries: Includes 2 replaceable CR2032 Batteries Weight: 0.33 lbs