OFFICE&SCHOOL CALCULATOR The basic calculator is an essential tool for everyone and is used in daily life. This universal calculator helps to perform simple calculations. It has a large display screen with 12 digits so it is easy to read and the large keys can be cleaned even by the elderly to see the numbers. In addition it also has fast tax calculation and simple profit calculation function of rate. SPECIFICATIONS: The back cover of the calculator cannot be opened and the battery cannot be replaced please be assured that because our calculator uses a power-saving chip it can be used for more than 3 years under normal conditions! Please pay attention to the age of use: Children under 9 years old are prohibited from using this product because the buttons are removable. Please keep away from children! PERFECT OFFICE& SCHOOL ACCESSORIES - SOLAR POWERED CALCULATOR Material: ABS plastic Recommended age: More than 9 years Extreme energy savings: automatic shutdown Scenes to be used:at home office or store Package includes: 1 x Desktop Calculator feature 12 Digits Extra Large Display Auto-Power Off M+ M- Grand Total (GT) Solar & battery powered Easy to use