Bright, white light has been proven to activate your body’s natural mood enhancers and prevent Seasonal Affective Disorder (SAD). The HappyLite 10,000 lux provides the clinical light intensity recommended by mental health practitioners. Half-an-hour first thing in the morning is generally recommended. Position the HappyLight 10,000 at the kitchen table during your breakfast or while reading the paper. Some people wall-mount the Happylite in front of their treadmill for "sunshine stimulation" in the early morning. The daylight-balanced bulbs provide soothing glare-free light. There is no UV or EMF emitted from the HappyLite. Measures 17" h x 12" w x 3.5" deep. Includes a built-in stand or an attachment for wall-mounting, 1 year warranty.