CASIO M-28 Solar / Battery Powered 4.2" LCD 12-Digit Calculator (1 x AAA)

Pros: =nice big digits on the calculator =screen easy to read on the calculator =buttons are nice and sturdy =unit works fine with the solar panel when battery dies =battery will never die/need replacement as it does not uses the battery if there is decent amount of light in the room, and will work on just the solar panel

Cons: none, this is a great calculator

Other: good calculator with big digits and excellent battery life with a solar panel. most of the time the solar panel will continue to power the device and it will not even use the battery, thus making the battery last a long time.

Pros: CASIO calculator, the brand speaks for itself, great quality. The buttons are smooth and well built in the calculator, the screen has a fine reading and the numbers are big. I could never buy a calculator like these around here for that price. Bough 3 calculators, i do recomend.

Cons: Nothing, as i said before, it is great.

Other: You need a big amount of light to make the solar panel works nice, otherwise you wont be able to see the numbers very well