Evolution Salt SL USB Sphere Himalayan Salt Lamp Multi Color Changing 1-2 lbs UNIQUE HOME DECOR - When plugged into your computer or USB adaptor, emits a rotation of warm colors ONE OF A KIND - Each lamp is custom cut from a single salt crystal so each lamp will vary slightly in weight and color--truly unique CALMING AMBIENCE - The soft spectrum of the desk lamp is naturally relaxing, stress reducing, and beautifully hand-crafted FAIR TRADE ECO-FRIENDLY - Mined from the base of the Himalayan mountains READY TO PLUG IN - Wire assembly and LED light included