HP 35s Scientific Calculator. Used. Great condition. Fully functional and very clean. Includes the protective sleeve, the Quick Start Guide, and the User's Guide (EN) all in good shape. The protective sleeve has a few marks on it, but the calculator itself is nearly perfect.

I bought this calculator recently, because I always wanted a high-end HP calculator. I ended up preferring the way a "regular" calculator works. So I stick with my old Sharp calcs.