Dual power: solar energy and battery backup power keep the desktop calculator working in low light conditions (not including AA batteries)
Desk Calculator Large Display: 12 digits display and large numbers, easy to use.
Big button: the electronic desktop calculator adopts a scientific large button design, which conforms to human habits and is comfortable to touch.
Basic Calculator - Add, subtract, multiply, divide, backspace, % and MU. Auto-off when you do not use it for about 10 minutes