Polish Crystal Salt Lamp by Solay Many studies have shown that salt crystal lamps can increase the negative ion count. Negative ions benefit asthma patients, people with chronic lung illnesses, and allergy sufferers. As well, they help improve learning, memory, and emotional well being. By creating a balance of ions in the air, they stimulate natural drive and healthy energy. A low-cost method, a Solay Salt Lamp is an excellent source of negative ions and is strikingly beautiful, blending favorably with any environment. Included: Natural wood Pedestal.  Free UL Safety approved Dimmer Cord ($15 value) 4ft light unit, on/off switch and 15 watt bulb. Weight: 6-10 lbs Height: up to 8” Ion Radius: 8’