Features: Colorful night lights, 7 color-changing lights, create a warm and romantic environment, very suitable for use at night, to help improve sleep. The warm and non-glaring light is matched with natural Himalayan salt stones to release natural negative ions, purify the air and improve the air. The Salt Stone Lamp is an elegant aromatherapy diffuser that adds your favorite essential oils and fragrances (not included) for aroma and tranquility. A soothing, healthy salt lamp that relieves stress, helps to relax the mind and body and stabilizes the mood, making people feel comfortable and happy. USB powered, easy to operate, suitable for study, bedroom, living room, yoga, meditation and other occasions.