This is a used item. Functionality has not been confirmed. For more details, please check the following website. This is an early device for digitizing handwriting and recording audio. It's quite rare nowadays. https://www.princeton.co.jp/product/other/ptbdip1.html Pad Model Number: PTB-DIP1 250mm wide, 350mm long, approximately 12mm thick, weighs about 650g. There is a small LCD display on the bottom. Pen Model Number: PTB-DPENRD 23.4 x 6.8 x 2.6 cm; 18.14 g Number of Lithium Ion Batteries: 1 The battery is 7mm in diameter and 5mm high. I believe the battery is dead, but I will include it. Weight: 18.1 g