This is a set of Casio's pocket computer, the PERSONAL COMPUTER PB-700, and the genuine memory pack OR-4 (4KB RAM). Since two RAM cards have been added, a total of 12K Bytes of memory can be used, including the main unit. Basic operations such as character input via keyboard, calculator functions, and graphic display using BASIC programs (see the first photo) have been confirmed, but due to the many functions, not all operations have been verified. The LCD screen has no missing or defective dots, and both graphic and character displays are working fine. The main unit also has no noticeable scratches or stains, and there is no battery leakage in the battery box. The condition is relatively good, but it is an old item, so please check the product photos for details. Shipping will be via Rakuraku Mercari Bin or Yuuyu Mercari Bin. ----- Pocket Computer PJ Pocket Computer Journal I/O Bema PiO