Many people suffer from light depression due to long winter months or staying indoors. The Happy Light® Lucent provides a natural solution in an energy efficient light therapy lamp so you can get your daily dose of healthy light. Light therapy has been proven effective for treating certain types of depression and sleep disorders. It can help improve your sleep, mood, focus and energy. Simply use HappyLight® for 15 to 30 minutes and start noticing its effect. Plastic. 6 1/2"W x 8 1/2"H x 4 1/2"D with stand. Comes with a 3-year warranty and 100% satisfaction guarantee.