Summary: I need a small calculator that fits in my coat pocket. I have used it daily for the last 4 years to calculate drug dosages and it has not let me down. The buttons are just now becoming a little worn, but still work. For the 3 bucks I paid for it, I have got all my moneys worth.
Summary: A significant percentage of the time when I hit a button it doesn't register. I spend a lot of time double-checking every entry I make. The calculator itself is quite small, which may be contributing to the problem. This is a low-quality calculator. There are plenty of calculators where the buttons work fine. Don't waste your money.
Summary: This item works fine, but it is much smaller than the dimensions in the ad. It is a small, palm-of-your-hand, fits in your shirt pocket, size. Not the larger size listed. But is quick and is solar, which I appreciate. Will last forever. I recommend it if you want one this size.
Summary: I have been through tons of calculators. I am not that demanding. First, I just like them to work. Next, I need a +/- key and a % key. Other than that I don't require much else. This one does everything I need it to. The overall size is small, approximately 2" x 4". The keys are small but the printing on them is large and the display is nice and large, comparatively. I do wish the overall size was bigger but will take the functionality over size this time.
Summary: I like this product because it is just like the one I had for many years. Just the right size and the price you cannot beat. Easy to use and the numbers show really good. I also has a built in battery which I was looking for one. The battery is one that is flat and is already in the calculator. But it is solar so I believe this will work for many years to come.