【DUAL POWER】Solar (works only when it is bright) and Battery (one AA battery NOT included). Note: Make sure one AA battery is inserted for continuous and accurate usage

【12 DIGITS CALCULATOR】12 digits make the calculator most useful for large calculations. Suitable for sales, workers, teachers and students

【BIG BUTTON DESIGN】The calculators adopt the big ABS plastic material button design. Reasonable configuration and comfortable operation

【Basic Calculator】Add, subtract, multiply, divide, backspace, % and MU. Auto-off when you do not use it about 10 minutes