This is an adorable LED lamp featuring two frolicking dolphins. The design provides a 3D illusion effect, and makes a great Birthday gift. It's perfect as a nightlight for children. The lamp comes with our 3 1/2" base, but looks really great with any of our larger bases, providing larger acrylic inserts. It's powered using any USB source (cable provided) or b using 3 AAA batteries in the battery compartment on the bottom. You also get the full controls to select from 16 different colors, change brightness, turn on/off, and to choose from three displa modes, including the popular FADE, which automatically fades from one color into the next.