Inspired by the naturally brightening light of the sunrise, the Philips Wake-up Light uses a unique combination of light and sound so you can wake up in a more natural way and feeling more refreshed. It gradually increases in brightness over a 30-minute period before your wakeup time, growing more intense until your room is filled with bright yellow light. This process of changing and increasing light stimulates your body to wake up naturally and comfortably. By the time light has filled the room, a gentle beep completes the wakeup experience, leaving you ready for the day ahead. Scientifically proven to be a more effective way of waking up, the Wake-up Light also leaves you more energized and in a better mood upon awakening. Because sensitivity to light differs for each person, the Philips HF3505 Wake-up Light has 10 different light intensities, so you can personalize the settings to your specific needs. The light can go up to 200 lux, for those who need the brightest light to wake up. This Wake-up Light is clinically proven to be effective, waking you more naturally and leaving you energized and in a better mood. At your set wake up time a natural sound will play to complete the wake up experience and ensure you are awake. The selected sound gradually increases in volume to your selected level within one and a half minute. There are two natural bird sounds you can choose from. The sound gradually increases in volume over the following 90 seconds. Alternatively, FM radio lets you wake up with your favorite radio show. The Philips Wake-up Light even features a classic snooze function: just tap the top of the light to stop the alarm, and after nine minutes, the sound will start playing again. The anti-slip rubber feet ensure that the Wake-up Light stays in place.