Fortune Products FB-20W Fairy Berries Mama Berry Lights, 1-1/2" Diameter (Case of 12) Round, white LED lights can be hung from ceilings or placed in trees, shrubs, or other places as party or holiday decorations Each light contains two LEDs that fade on and off slowly to create a twinkle effect Loops allow lights to be hung using a thin string or wire; lights can float in water and are water-resistant CR2032 lithium coin cell batteries power lights and can be replaced; switch turns each light on or off Each light measures 1-1/2" in diameter