To activate your LED Multi Colored Round Tambourine, press the button on the inside. With every click of the button, choose from 6 options: rainbow flash, slow color change, all LEDs steady on, red blink, green blink & blue blink. Dimensions: Diameter: 6.0 in. Depth: 1.75 LED Colors: 3 Red, 3 Blue, 3 Green Batteries: Includes 3 replaceable AAA Batteries. Packaging: Individually wrapped, poly bag – 12 pieces per bag- 72 pieces per carton.