Purchased on Amazon for 7999 yen. Selling as it is no longer needed after completing the certification exam. CASIO ND-26S calculator with 12-digit display. CASIO ND-26S Professional Business Calculator (with soft case) (Recommended calculator by the Japan Calculator Skills Certification Association, recommended for bookkeeping exams) Large display, date calculation, time calculation, 12 digits, silent touch, battery & solar powered. Business, Bookkeeping Thank you for viewing.