I was skeptical of how effective this clock would be but desperate for more sleep. It has been a fantastic tool. Our 2 year old quickly took to the green light, staying in her bed or her room until it comes on, and really seems to genuinely like it. It's a 'happy green light,' and that means that the parents are happier for the extra sleep. She loves the Big buttons, making it smile and turning on the night light have been very helpful in her learning to go back to sleep by herself. I would recommend it to any parent and will be getting a second one for our next child when they are old enough!