This product is a compact two-in-one device which works as a SAD light and wake-up light. Blue-enriched white LEDs gradually brighten to fully wake you in the morning; five light levels provide bright light therapy during the day to lift mood, boost concentration, restore natural energy and treat the symptoms of SAD. Energy-efficient and UV-free. This lamp offers five light levels with an automatic timer to ensure effective exposure. Features include a fully dimmable display, 15 or 30-minute sunrise to wake you up gradually, adjustable light intensity for a gentle or bright sunrise, snooze, optional alarm beep and power failure back-up.