The Philips Wake-Up Light provides a pleasant, natural way to start your morning. Featuring a colored sunrise simulation and 20 brightness settings, the light gradually increases between 20 to 40 minutes prior to your alarm time. The light also offers the option of waking up to one of five different nature-inspired sounds. Backed by clinical research, the UV-free Wake-Up Light is proven to wake you up with an improved mood and energy level. A light-responsive dimming feature guides you to natural, restful sleep.