Summary: The best! Have used this calculator since 1989 before needing a battery...it still worked great using solar even without battery. Decided to order a new one, rather than replacing battery. It is truly the best simple calculator on the market!
Summary: Very flimsy compared to earlier models, which I have used for decades. Feels like low-quality. With the kickstand up, it wobbles when you use it. Same with the kickstand down, as it will not lie perfectly flat, so it again is not stable. Do not buy.
Summary: Performs flawlessly and is the perfect calculator for those who want a simple device that properly registers each keystroke. It has a backspace key, which is a great feature for correcting occasional or frequent keying errors without the need to clear your work.