As an absolute complete novice only being able to pick out the moon correctly in the night sky I read all the great reviews for this product with interest. Costs more than the telescope we purchased but was money well spent. Yes the sat nav technology is a bit slow but its not a race, you point it at your star and it gives you all the info on the display or audio if your wearing headphones. I am absolutely delighted with this product, dont let the price put you off. For us the telescope on its own seems pointless unless you know what to look for or what your looking at. If it were down to cost Id rather have this star locator and not a telecope at all.