de Hans el 04/08/2018
A very bad experience!!!
I have purchased a hp 41C to challenge me to view is I am able to upgrade it in a Sy 41CL.
The hp 41C calculator has been repaired using stripped screws and is impossible to open.
So to upgrade it in a 41CL is impossible!!!
For other side, the calculator seems works well.
I planned to buy a 41CL from The Calculator Store, but with these not-at-all serious dealing, I can say that I never buy anything from The Calculator Store!!!