Easy to use, large display:Small and cute: 120*150mm.All products with batteries have passed the test,caution! ! ! Be sure to install the battery to use It install batteries to avoid unpredictable errors, one BATTERY of this product,12 digits, better field of view, corners of the eyes, upright LCD screen; automatic shutdown (not used for 10 minutes). Non-slip design: Non-slip washers are not easy to slide during operation. Calculation function: 1. Profit and loss calculation mode, MU key calculates the transaction profit and loss, which can be simple, one-click to get the price and profit; 2. Continuous sum mode, GT key can store and calculate the sum of the calculation results of multiple fractional formulas; 3. Clear mode, CE key to clear the previous step, re-enter the new step to get the correct result; 4. Clear mode, AC key one key to completely clear the input data, re-enter the correct data to get the correct answer; 5. Memory storage mode, M+ key memory storage Positive results, M-key memory stores negative results, MRC key recalls the memory/clear results. Oblique viewing angle for easy reading. Durable silicone button: good sense of touch, ABS plastic material, Light weight. Reasonable configuration and comfortable operation. Solar and Battery Dual Power Solar and backup batteries keep the desktop calculator working in low light conditions. The calculator can handle solar energy, 1.5v battery as battery backup and have automatic power supply. 1 100% AFTER SALE SEVICEWe provide a return policy for you to ensure you 100% satisfaction. Would you have any questions to our product, please feel free to contact us and we will give you a quick response.