This is my fourth RPC HP Calculator in 35 years. I buy one every now and then whether I need one or not. :)
Despite also owning an iPhone/iPad/iMac/Microsoft PC...I still prefer HP's RPC calculator
Criticism: The keys don't have the solid/smooth feel of the original HP12C, and the new carrying case is thicker/more clunky than the original. Charge $10 more and bring back the original features for five stars.