Aucanla 12-Digit Desk Calculator with Writing Tablet-Mute Portable and Foldable Desktop Calculators-Multi-Function Basic Calculator for Office Meeting and Study

Standard Function Desktop Calculator?with 12 Digit Large LCD Display and 6 Inch Office Writing Tablet Product Parameter Working Temperature:14?-104? Writing Strength:5-10 OZ Battery Model:CR1220*2 Handwriting Baord Life Service:over 50000 times Troubleshooting Q:The calculator screen is dim or cannot be turned on? A:low battery,please replace the battery in time. Q:Garbled characters in calculation? A:Press AC to reset. Q:The writing pen is missing? A:Replaced by other non-sharp hard objects. Q?Tablet cannot be written or erased? A:Change the battery or press the clear button repeatedly 5-10 times to activate. Q:Unable to display after repacing the battery? A:Check whether the positive and negative poles of the battery are installed reversely.Or contact our customer service. If you have any questions, please feel free to contact our after-sales email,we will provide you with satisfactory service.