I really like this clock. I'm a big fan of not being able to see the time as I'm sleeping and this design enables that. I also like the sleeping function. However, it's only great when it actually works. As others have pointed out, sometimes the alarm clock function (sound) doesn't work - the light may come on but no sound gets played. I've tried physically resetting it every night and it's still hit and miss. I wouldn't recommend if you are a heavy sleeper as you risk sleeping in!