Calculator desktop 12 digits large LCD display buttons solar battery dual power office home business homeschool use

[Size] 187mm×146mm×40mm. Weight: 260g (without battery). {Note: For transportation safety and security control, the calculator does not come with a battery, so please prepare one separately}. [Large Display and Large Button Calculator] This large calculator features a big display screen and large buttons, designed with scientific machine engineering principles. The large buttons and good reset function enhance comfort. It is very easy to use and readable, making it suitable for accountants, salespeople, and other business professionals in offices, stores, markets, etc. [Dual Power Solar Calculator] Both solar and battery power supply energy to the calculator. When the battery runs out, the calculator has a solar panel that can convert light energy directly into electrical energy. It requires sufficient light and does not have a storage function, so it is recommended to use it in combination with a battery. [Non-Slip Design] The calculator is made of high-quality ABS environmentally friendly material, featuring a smooth texture, fashionable design, and durability. The back of the calculator has four rubber feet for non-slip use, preventing the body from slipping during input. It is stable on desktops and can be used with confidence at any time. [12-Digit LCD Display] The calculator features a 12-digit LCD large high-definition display with a 15° angled design, providing a comfortable reading angle based on ergonomic principles, making it easy to read and scientifically rational, effectively reducing eye strain after prolonged use. It can be used in a wide range of scenarios from home to business.