The SONY HW-40 is a B4-size personal word processor equipped with a 24x24 dot matrix printer. - Brand: SONY - Model: HW-40 - Type: Personal Word Processor - Printing Method: 24x24 Dot Matrix Printer - Paper Size: B4 - Functions: Text Input, Printing - Keyboard: Japanese Keyboard - Printing Pitch: Pica Pitch It is unknown if it is usable. I also don't know how to use it. Thank you for viewing.