Having had the Canon MP120-LTS for more than a decade, I decided to purchase this product (MP120-ES II) to have another calculator in the office. From the moment I received it, I realized that the build quality is poor. The buttons started sticking and overall there was difficulty in even using it briefly. In a few months, the machine simply does not work at all and I am searching for the receipt to pursue warranties and see if I can get a solution. I am sorry that a reputable company like Canon no longer produces quality and reliable tools. I do NOT recommend it.