Star-Power Calculator 14-Digit Desktop Solar Battery Dual Power Large LCD Display Big Sensitive Button Calculators with Check&Correct Function for Office School Business Desk

Multi-purpose: The 14-digit dual power calculator is suitable for office, home, school, market or business calculating.A big, ergonomic, and comfortable calculator is a good gift for your friends, kids, student or others. Professional Design: Scientific button and large LCD display design can help you see clearly symbols such as plus, minus, multiply or divide when calculating numbers. Basic key operations: [AC]: power ON / clear error/ clear memory ( Auto-off when you do not use it for about 10 minutes) [MRC]: Memory Recall(Memory Wipe when pressed twice) [%]: Percent plus-minus key. [CHECK ?]: check forward. [CHECK ?]: check backward. [CORRECT 00?0]: correct function. [AUTO REPLAY]: Auto replay calculation step. [M+]: memory plus (adds the displayed value to the independent memory). [M-]: memory minus(subtracts the displayed value form the independent memory). [GT]: Whenever the [=] key has been pressed, the result will be stored into the Grand Total Memory. [MU]: Stands for Mark Up, which is for calculating GROSS PROFIT MARGIN (GPM). Package Includes: 1 x Calculator 1 x AAA battery Note: The battery that comes with the product is a non-rechargeable battery, please do not charge. The power provided by solar panels in a dim environment is limited, please install the battery before use.