In the morning, it has 20 brightness settings that slowly increase over 30 minutes so you rise ~with the sun~, feeling energized and ready for the day. Once it's at full brightness, only *then* will the alarm sound go off.
Get it from Amazon for $128.
Promising review: "This has really made a big difference in how I wake up every morning. On these short winter days, I always have to wake up before sunrise, and that's...challenging. I found myself hitting the snooze button at least three times, leaving very little time for me to get ready and to work on time. Having the sunrise simulation wakes me up gradually and completely. I almost always wake up fully before the music starts and I have not needed the snooze function yet. All of the wake up sounds were pleasant. I especially like the birdsong with flute music, as it reminds me of being in a spa. I like the dusk option for going to sleep. I set it for 30-60 minutes and read until it's too dark and I drop off to sleep. An additional bonus is that since I'm no longer using my cellphone as my alarm clock, I practice better sleep hygiene and keep my cellphone out of the bedroom. It is a significant investment but it has been worth it." —MsEdinger
Check out a BuzzFeeder's review (#11 in the post) for a first-hand account on how it can make mornings easier.
If you're looking for a cheaper option, you can get a similar wake up alarm clock for $27.49.