I was looking for an electric pencil sharpener not too expensive but powerful enough to be used in class, so at a steady pace, but I am very disappointed by the effectiveness of it. I tested upon receipt (commissioned Saturday, received the following Friday) with my own crayons (though excellent): mines were broken several times, I can not get a late cutting. .. short, the result is inconclusive. In addition, I want to clarify that this product is derived from the name "United Office", that is to say that of the brand LIDL. It might be good (and honest) to specify this in the product description? For if I had known this before ordering, I probably would have chosen a different model, even put a little more expensive.