Description:Crystal salt stone and base together, plug in USB can be usedThis salt lamp baby has multi color changing function,it has LED light inside,no need for you to install,great decoration for home and office,saves space while being stunning, keep your anxiety under controlExtract high purity of crystal salts from Himalayan mountain, elaborately hand carved crafts, can be used for lighting, decoration and air purifyingReleases negative ions into the air, creating an effect similar to an ionizer, purifying the surrounding airThis process is enhanced by the natural process of NACL resulting in the production of negative ions which eliminate the positive ions which are present in our environment, produced by computers, refrigerators, televisions and moreThus these lamps make the air clean, fresh and healthy to live inAmber crystal salt rock lamp, creates a unique ambience, makes you feel peaceful and helps to sleepOnce lit the natural himalayan salt lamp,LED light will emit a calming Amber color and will automatically slowly switch color's between: Orange, Blue, pink, red, green and purpleSuitable for people who sit for a long time,frequent use of computers,suffer from allergies,do yoga or meditation very often,elder or weak,smokers,recurrent insomniaUSE:Negative ions reduce the effects of: Dust, Bacteria, Pet Dander, Radiation, Odor, Insomnia, Allergies, Sinus, Depression, Migraines, Anxiety, Fatigue, Colds, ADHD, and asthma. Salt Crystal Lamps have a similar effect to the ionizer. These lamps emit negative Ions to their surroundings. The ionization helps combat many of the harsh elements that bombard our bodies, causing us to feel unwell. The placement of our lamp in an area that one uses frequently can help balance our bodies, boost our immune system and give back lost energy.Specification:Material: 100% himalayan crystal saltLight Color: ColorfulSize: 8.2x 8.2x 10.5cmQuantity: 1 Set