I purchased this in high school, but I hardly used it. Casio Electronic Dictionary EX-word Data Plus 10 EX-word DATAPLUS 10 Model Number: XD-Z4700 Touch pen (built-in) Comes with a dedicated case Instruction manual and batteries are not included. I wrote my name on the case and the main unit with a marker. I erased the name on the main unit, but traces remain (Photo 6). I've covered the name on the case (Photo 7). Thank you.