SmartSleepWake-up light: sunrise alarm clock with 7 sounds

Does Philips Wake-up Light really work?

How can I be sure I will wake up at the set alarm time?

What are the effects of the Wake-up Light?

Will my Philips Wake-up Light wake me up too early?

What does the Zzz function on my Philips SmartSleep Sleep & Wake-Up Light do?

How do I snooze the alarm of my Philips Wake-up Light?

The FM radio of my Philips Wake-Up Light is not working

My Philips Wake-up Light is not turning on