The HP48SX is a discontinued model so generally the units we have are all second-hand. We test and refurbish all the units. All are under warranty for 90 days.
HP48SX Graphing Calculator. This is a precursor to the HP48GX. It's an excellent calculator.
Occasionally we carry the 48S, which is identical to the 48SX but without the expansion slots. This calculator is a great deal if you don't need expandability or are collecting these historic HP calculators.