The old woman worked honestly for 10 years, and would have continued to work if the dog had not gnawed through the wire. Klava never gave cause for frustration. I even tried to fix the wire, but the second time I didn’t have the patience to connect the 5 thinnest wires inside. Definitely recommend if you want quality without the bells and whistles. Has some pros: Nice strict look Build quality, well-chosen colors, Separate calculator button Durability, All additional buttons on win 7 worked fine and without installing drivers, Easily wiped the dust from it, For the whole long period there was no need to clean it from the inside, The inscriptions on the buttons have not been erased for 10 years With its cons: A number of F buttons are small and Enter, but this did not really interfere