The clock is fairly easy to set but I did have to look at the directions. But once I read them, I had no problems getting the clock set. It is just a matter of knowing which buttons to hit when. My girls had great fun when the head popped off and rolled about. A light comes on when the alarm goes off. The noise it makes is fun, but irritating enough that you will not fall back asleep because you will want to shut the thing off. You are supposed to hit the reset button and put the head back on to turn it off. It took a little finagling for me to get it to turn off and if it was like that in the morning, I would definitely be awake!
Disclosure: I received a Pop Clocky to facilitate this review. All opinions are my own.