Description:<br> This standard calculator is a must for any businessman, worker, teacher, student or anybody that needs to make any sort of calculation from time to time.<br> The calculator is made of good quality material and is well constructed. The 12 digit display screen indicates your numbers in clear, dark lettering.<br> Both button battery and 1x AAbattery power ensure that you'll always finish whatever you start, whenever and wherever you are so you don't miss a step.<br> Note: 8 minutes, if not use the calculator will automatically shut down<br><br> Contain：<br> 1x calculator (built-in button cell and 1 x AA batteries )<br> 1x specification<br>