Himalayan Glow Salt Pink Color Lamp Wooden Base Cord Switch Changing Color Bulb This is a great Himalayan Crystal Salt Lamp Pink color with a color changing bulb. changes from a blue, pink, yellow or green A new 15 Watt bulb included and the color changing bulb. Also included is a black bulb that can be used at night with no light but the effects of the lamp Comes with electric cord with on and off switch Stands 8 1/2 inches in height It is a thought by Scientific studies these lamps work by heat from the light bulb activating the salt which releases Neg-Ions into the air killing bacteria, molds, mildews, spores and odors Even if this doesn't work by the scientific studies they make a great nightlight and decoration Message with any questions