Summary: Love the big keys, but found one drawback. It's extremely difficult to see numbers on the digital screen in the bright sun shining in my office window. I either have to shade the display with my hand or turn it around to face away from the window. Sigh.
Summary: If the internal battery were to die, replacing it would be a serious pain because there is no easy way to change it. There are TINY screws holding the calculator together, so I'm guessing that it was never really meant to be taken apart to replace the battery. But, under normal lighting conditions, the solar cell is enough to power it.
Summary: BOUGHT THIS TO REPLACE THE IDENTICAL ONE I'VE HAD FOR YEARS (THE NUMBERS ON THE KEYS WERE FINALLY WEARING OFF). TERRIFIC LITTLE CALCULATOR WITH LARGE KEYS THAT WORK REALLY WELL FOR "OLD EYES".
Summary: Item dimensions were supposed to be 8 x 10.8 x 2 inch. unfortunately that includes the packaging. Worthless information. The actual calculator is only 7 1/2 in high by 5 3/4 in wide. I needed the largest possible for an almost blind senior citizen. Very disappointed.