I am an 83 year old woman who has worked on computers since 1984 and have gone through lots of adding machines; this one is great. I needed a little adding machine near my computer for various times and with the large readable keys and the large display window; I couldn't be happier. Lots of bells and whistles with this unit that I won't really use but if someone is interested in them all, you can't go wrong with this purchase. I did get a small amount of tape delivered with the unit, however I had plenty of my own but if you don't have any tape, better purchase some extra. Even as I view the unit, way back on the desk and under a covered area, I can still read the display.