USB salt lamps plug into the USB port on your computer, so whenever your computer is switched on the salt lamp helps absorb electrical fields and balance your environment. Himalayan salt lamps are known for their ability to ionise the air, therefore enhancing well being and improving health. The freshness of the air after a thunderstorm, on a mountain top, or by the seaside is due to the high concentration of negative ions in the air, these are the same negative ions that are produced by Himalayan salt lamps. Harmful positive ions exist in highly polluted air (cigarette smoke, electric waves from computer screens and air-conditioned offices) which causes sickness and many modern diseases. Besides helping to clean the air, negative ions promote recovery, metabolism, improves blood circulation, and helps fight fatigue. Perfect for your office to help rid of positive ions released from your computer and monitor. RGB gently flows in red green and blue to harmoniously nurture while you work.