Lights come on a coloring changing LED base (L: 5.9 in x w: 1.77 in). The acrylic piece can be cut & engraved to a shape & design that fits your style needs! The total dimensions come in roughly around w: 6-8” h: 6-10” d: 2”.  They are USB plug in & has a switch that allows you to change between all the colors of the rainbow, adjust brightness levels, or adjust the speed if you want to have a continuous color change.