Sam the Lamb sleep trainer is a clock that was brought for my daughter but she doesn't like him because she wants a monkey one like her sister! He has been used for such a short time he is like new! You can set a time for yr child to wake or use it as a way to keep them in bed until it's time to get. My daughter wasn't allowed up until he had opened his eyes ( she was in a horrible habit of waking round 5.30). He runs on battery or power he still has all his instructions and he also has a night light. We paid $80.00 and he wasn't out of the box for more than a week! Feel free to ask questions