Featuring a two line alpha numeric display, ability to input data via Reverse Polish Notation, Algebraic and normal Chain algebraic methods, and twelve digit display.

Also, it has a built in Black-Scholes Equation,[2] for calculating theoretical premium for calls and puts, Modified Internal Rate of Return and Financial Management Rate of Return, a first.

[4] The resulting WP 34S (2011) firmware and user's manual can be downloaded free of charge,[5][6][7][8] and a special serial cable and keypad overlay can be purchased for a nominal fee.

[10] A firmware branch with a complex number lock mode is called WP 34C (2015).

(The community-developed WP 43S, which is based on the SwissMicros DM42 hardware, is a successor to this project.)