Bought this calculator as a replacement for a very similar Casio one I'd used for years in many jobs and that had been an extension of my right arm! but sadly had stopped working and no same replacement available. So looked for a similar one. I wanted a fairly large business but still portable calculator (to take to meetings etc) with large buttons and a flat design (i.e. not the tilt display types).This calculator is a classy looking thing, if you can call a calculator classy! Takes a bit of time to adjust to after the Casio one, so took some time to work out how some of the calculations were working (e.g. the grand total function or the repeat equals function that repeats the same calculation on a different figure), but these were straight forward enough when I got used to them. Apart from that a very good calculator which I'm sure will last for years with all the required functions for business or basic calculations, 12 digit and as I say the appeal for me is it's large but still portable (can still put it in my jacket pocket or carry easily or use as a desk calculator also).