There are three problems with this model.1) The booklet that comes with it is VERY out of date. It offers tables for planetary positions so you can set the planets to the current position and update them periodically EXCEPT, the tables stop in the early 2000's. This wouldn't be such a problem if the company provided a website where you could get the current information or even printed the algorithms for finding the current locations based on the data they do include but they don't do either of these. Given the price, this is very disappointing.2) The planets are hard to move around to their correct orbital position and it is difficult to move one without moving others. This makes it nearly impossible to accurately represent the correct positioning. Again, at this price, I would expect a little more attention to detail.3) The colors of the planets are really arbitrary. For example, Earth is white, Jupiter is purple, and so on.All in all I am pretty disappointed. Some small thought to the user experience could have made this a good product. Unfortunately, it seems no one cared about that.