SLEEPTRACKER Elite is a “watch” that follows its name, it tracks your sleep, up to 12 hours of it. It continuously monitors your sleep and once you plug it to your computer, you can check exactly how much sleep did you actually get. A much better function is the alarm function, that lets you set a time period within which you have to wake up. It sounds the alarm within that time period, but only when it sees that the user is in a light sleep stage. Great, but spending $179 for that seems a bit over the head.