Thank you for viewing. SHARP Math Pack I CE-12A1 for PC-1250/1251 - 1 tape This appears to be a tape containing programs for Sharp's old pocket computers, but please forgive me if I am mistaken. Please refer to the ruler in the photo for the size. The instruction manual has 30 pages. The box has scratches, marks, and dirt. The tape is unopened with its original plastic wrapping, but due to long-term storage, I cannot guarantee that it will work properly. Please consider it as a collector's item. There is no guarantee of operation. If you understand and accept this, please purchase it.