1[High Sensitivity] With high sensitivity and quick response to keys, this calculator will improve your productivity. Made of durable ABS for long term use.2[Large And Wearable Keys] The numbers on the calculator's keys are resistant to wear and tear, and the large buttons prevent you from pressing the wrong ones.3[Dual Power Supply] A power saving calculator with two power modes, solar and battery, that can be charged by solar power when light is available, without the need to replace battery.4[Aesthetically Pleasing Design] Elegant and slim design and reasonable button layout make it aesthetically pleasing and practical, and perfectly sized to fit on your desk.5[Applications] This calculator is perfect for office, business, student, store and home use, you can also give it as a practical gift to friends, students.