Cons: - the look a little plastic "cheap", unfortunately. I would have preferred something a little classier but ...
- One button to set the time / alarm "forward." If you get up at different times every day (which I do), it's a little tedious ... but ...
In summary, I am happy with my purchase. My neighbors are large and ultra loud rednecks I soon found myself obliged to foam plugs to sleep. The problem is that I do not always hear my alarm clock. With the vibrator, this problem is solved!
In a few months to tell you if it still works as well.
PS: no power problem in my case