1. Health and Environmental Protection: Features a blue matte LCD screen that protects your eyes. It can be written on repeatedly, reducing paper consumption, making it eco-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 notepad are designed as one unit, with a handwriting pen attached to one side. You can take notes while calculating, significantly improving learning and work efficiency. 3. Lightweight and Portable: This mini pocket calculator features an erasable writing pad and a foldable design, weighing approximately 165 grams. It's highly compact and can be carried in a pocket, allowing for quick retrieval and immediate use when needed. 4. Quiet Design: Our basic calculator keyboard is made from premium silicone material, offering a soft touch and comfortable, quiet, and noiseless operation. Using this calculator won't disturb others or interrupt your own thoughts when calculating data. 5. Durable: The calculator is meticulously crafted with silicone buttons that are not easily detached and are wear-resistant. After use, the calculator can be closed like a book to prevent damage to 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