The Philips Wake-Up Light HF3470 provides a more pleasant and natural way to wake up in the morning. Because there’s nothing worse than being jarred awake by a blaring alarm clock, the Philips Wake-Up Light, an Official Light Therapy Product of the National Sleep Foundation, wakes you in a natural way with light that increases gradually. The Wake-Up Light simulates the sunrise to help you greet the morning with an improved mood and energy level. Light gradually increases for 30 minutes before your alarm time to gently prepare your body to wake up and feel more energetic at the start of your day. With optional FM radio and nature sounds, the Wake-Up Light ensures waking up will be a pleasant experience.