I bought this calculator because he had very good reviews and a classic in schools. I needed him for the vocational school. I have received a blue calculator garnicht what corresponds to the image. The solar function is really bad. I have kept the computer Unters light as far as you could see the numbers good but you go so far in a darker room, he is no longer be used !!! Unfortunately, this is not because our classrooms are not the brightest. I can not recommend these calculators. The geometry - Set is a great idea :)
