KING JIM boogie board BB-21 Retail Price: ¥5,500 Unopened, New Everything shown in the images is what will be sent. Please refer to the photos for the product condition. A high-quality electronic memo pad with a cover that fits perfectly in your chest pocket, allowing you to write and erase repeatedly. It offers a smooth writing feel like paper. The line thickness changes with pressure. External Dimensions: Approximately 100 x 76 x 13mm Screen Size: Approximately 62 x 83mm Weight: Approximately 67g Number of Erases: Approximately 50,000 times (battery replaceable)