100% Himalayan Salt Crystal + Plastic Base + 7W Multicolor LED light + USB Cable (Included USB Adapter) Natural Himalayan Salt Lamp is made by hand carved from 100% Himalayan Salt Crystal, so each one styling is unique and natural. USB Table Salt lamp interior has been installed the LED Light Bulb with the USB Cord. The length of Salt Lamp Cord is about 72 Inch; let you plug in the salt lamp without the distance trouble. Benefits you can get if the continuous use of this salt lamp: Salt crystal lamps are highly suitable for daily use in the whole house. In bed rooms, in living rooms, in dining rooms, in the hall way, in meditation rooms, near televisions and around computers. Use these beautiful lamps in offices to reduce fatigue and beautifies surroundings of your work area, it improves your concentration and refreshes you by neutralizing the effects of an artificial environment. Use the lamp in waiting rooms to create a relaxing atmosphere, during massage therapy, and anywhere else you want to restore or maintain the natural air quality. The color of salt lamp will always changing, Enjoy it! Salt lamp maintenance:  Use a dry cloth to remove dust on the surface, in order to maintain its good light transmittance; if some dirt cannot be removed with a dry cloth, use wet cotton cloth or wet sponge to remove the dirt, do not wash it or soak it in water. Please place the salt lamp in a place without a splash of water, do not put it outdoor. If the weather is humid or the lamp is wet accidentally, the salt surface will have moisture condensation, please wipe with a dry cloth, turn on the salt lamp for a few hours, the moisture will disappear.  If you do not use the lamp for a long time, please wrap it in plastic bags, cut off from the air. Turning off the lamp is not suggested or it will absorb moisture and cause moisture condensation. Avoid bumps.