The customer comes first! If you have any dissatisfaction with the product, we support full refund within 30 days! Solar Powered Calculator Large Display And Buttons Clear Large LCD Display Ideal For Office School Home And Business Use Feature: Product name: solar calculator Material: ABS Colour: Purple Display digits: 8 Power supply: built-in button battery + solar charging Product size: 5*2.8*0.27 in / 12*7.2*0.7 cm Package Viflosae Solar Powered Calculator Large Display And Buttons Clear Large LCD Display Ideal For Office School Home And Business Use Electronics Gadgets Up to 40% Off 【Double power supply design】 powered by both solar energy and built-in batteries, ensuring continuous use in a variety of environments. Whether in sunny outdoor or indoor environments, it can maintain a stable power supply, greatly improving reliability and flexibility 【Large Button Design】 Designed with large buttons for ease of use, it is particularly suitable for prolonged use or for users with poor hand dexterity. The large button design reduces misuse and improves comfort and efficiency 【Clear and large LCD display】 Equipped with a clear and large LCD display, the display is clearly visible and the results can be read clearly even in poorly lit environments, enhancing the user experience 【Multi-scenario use】Suitable for office, school, home and commercial use. Whether in the school classroom, office work, daily home or commercial situations, can meet a variety of computing needs