Health and Environmental Protection: Blue matte LCD screen, protects eyes. It can be rewritten repeatedly, reducing paper consumption, being environmentally friendly, dust-free, and ink-free. Press the Clear button to erase LCD notes and protect personal privacy. Improve Learning and Work Efficiency: The 6-inch calculator and erasable LCD notepad are designed in one piece, with a handwriting pen attached to one side. You can take notes while calculating, improving learning and work efficiency. Lightweight and Portable: This is a pocket calculator with an erasable writing tablet and foldable design, weighing about 165 pounds. It is very compact and can be carried in a pocket. It can be quickly taken out and used immediately when needed. Silent Design: Our basic calculator keyboard is made of premium silicone material, with a soft touch and comfortable, silent, and noiseless touch. With this calculator, you won't disturb others or affect your own thinking when calculating data. Durable: The computer has been carefully crafted with silicone buttons that do not come off easily and are wear-resistant. After use, the computer can be closed like a book to avoid damaging the keyboard.