Versatility: This calculator supports 552 different scientific calculation functions, from simple addition, subtraction, multiplication, and division to complex trigonometric functions and equation solving. Programmable Design: Users can program specific functions into the calculator to perform common calculation tasks more efficiently. Sliding Cover: The scientific calculator features a sliding hard cover to protect the buttons from damage. Large Screen Design: The calculator is equipped with a high-resolution screen where you can view mathematical expressions and calculations for easy reading. Clear Buttons: The letters on the buttons of this scientific calculator are very clear and comfortable to use, providing the most convenient experience. Item Type: Scientific Calculator Material: ABS Battery: LR 44 button cell x2 (supplied with built-in battery) Battery Capacity: 160mAh Product Size: Approx. 17 x 8 x 2cm / 6.7 x 3.15 x 0.8in Package Includes: 1 x Scientific Calculator (supplied with built-in battery), 1 x English User Manual