EASY TO READ: Portable calculator with a large 8-digit LCD display that is clearly visible. Durable Material: Our pocket calculator case is made of ABS material with silicone buttons, which give you a comfortable pressing feeling, safe and durable. Easy to carry: The calculator measures only 4.7 x 2.7 inches, compact and lightweight, easy to store in a drawer or carry in a school bag. Great for home, school and office use. Dual power sources: The electric digital calculator has dual electric drives, light energy and button batteries; the power mode can be switched according to the environment, more durable and environmentally friendly. Large keys: Our calculator has high sensitivity and fast key response, which improves your work efficiency; the numbers on the keys are not easy to wear and can be used for a long time.