It's an alarm clock that wakes you in a natural way with light that increase gradually (the light begins turning on 30 minutes before your alarm goes off). So the idea is that it simulates the sun rising! And you can either wake up to (1) radio, or (2) natural sounds - birds chirping, wind chimes. Okay, it may sound silly, but my coworker swears by it, says it has helped her get up easier in the morning. I value her opinion, so I bought it myself...and although I've only used it a few times, I really like it! It's a favorite purchase this week :)
Anyway, I'm reading the book about the actual couple's story...and it's SO moving. Like most stories, the movies aren't quite as good as the books or the true tales, but this one is completely different. It's a great story though, and just such an inspiring tale of resilience, determination, faith and love. I highly suggest you read it if you get a chance!