These 8 digit calculators are perfect for classrooms. Each one has an extra large display with 14mm digit size. They feature basic calculator functions as well as a change sign key, square root key, percent key and 3-key memory. This kit includes 10 calculators in an eco friendly wood caddy. The teacher's kit also includes electronic educational materials that you can download and print only what you need for your lesson plans. Details:10 countProtective cover included2 year manufacturer warrantyOperates on hybrid power solar/battery backup