<b>Functional Instruction:</b><br> <br> ON/AC key: turn on/clear<br> M+/M- key: memory plus or minus<br> MRC key: memory total value and clear memory<br> GT key: summation calculation<br> OFF key: turn off<br> MU key: profit and loss operation<br> <br> <b>Item Specifications:</b><br> <br> Item name: 4 pack calculators<br> Compatible: for everyone, home, office, student<br> Product type: Arithmetic calculator<br> Powerd By: Dual power solar and battery (battery included)<br> Size: 5.7 x 4.7 x 1.8 in (1 piece)<br> Weight: 4 oz (1 piece)<br> Material: ABS plastic<br> Display number: 12<br> Color: Black and Silver<br> <br> <b>Package includes:</b><br> 4 x Lichamp Basic Calculator<br> 4 x AA Batteries <br>