CASIO Graphical Calculator - Model fx-7400GII (A-Level Maths, Further Maths). This is the calculator I used for my A-Level Maths and no longer need. Working perfectly as far as I'm aware. The batteries are for display purposes only (4x AAA), as they have died. It's a bit scratched up and I don't want much for it, just for it to be useful for someone else!
eBay