Welcome to our store! 1. Health and Environmental Protection: Blue matte LCD screen, protects eyes. It can be written on repeatedly, reducing paper consumption, being environmentally friendly, dust-free, and ink-free. Press the erase button to clear LCD notes and protect personal privacy. 2. Improve Learning and Work Efficiency: The 6-inch calculator and erasable LCD notebook are designed in one piece, with a handwriting pen attached to one side. You can take notes while calculating, improving learning and work efficiency. 3. Lightweight and Portable: This is a mini pocket calculator with an erasable writing board and foldable design, weighing about 165 grams. It is very compact and can be carried in a pocket. It can be quickly taken out and used immediately when needed. 4. Silent Design: Our basic calculator keyboard is made of premium silicone material, with a soft touch and comfortable, silent, and noiseless typing. By using this calculator, you will not disturb others or affect your own thinking when calculating data. 5. Durable: The computer has been meticulously crafted with silicone buttons that do not easily come off and are wear-resistant. After use, the computer can be closed like a book to avoid damaging the keyboard. Item Type: Calculator with Notepad Product Material: ABS+LCD Battery: Button cell battery CR2025 (built-in) Capacity: 170 mAh Product Size: 150 x 90 x 15 mm / 5.91 x 3.54 x 0.59 inches Notepad Size: 6 inches Number of Digits: 10+2 bits 1 x Calculator with Notepad 1 x Instructions If you find any product issues after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.