I needed a clock with a temperature on it for my office, as I can not tell the time of day or what the weather is like outside, so I looked around for something and found this. My office doesn't have very many outlets available so this clock was perfect, cause I can plug it into my computer, it does take batteries too, but for me plugging into computer was perfect, It has the time and temperature. The projection doesn't stay on, you have to push it, but...maybe there is a way to keep it on in ca...