Material and Design: Crafted from durable ABS material, this calculator is designed for general purpose use, featuring a large 12-digit display screen that enhances visibility and ease of use for all your calculating needs. Innovative Features: Equipped with a unique built-in pen and a one-click erase function, this calculator enhances productivity and convenience. The integrated pen allows for quick note-taking or corrections, making it an ideal tool for professionals and students alike. Description/Features: **Large 12-Digit Display**: This calculator is designed with a large 12-digit display, ensuring that numbers and equations are easy to read, which enhances user convenience and accuracy. **Built-in Pen**: A built-in pen is included, facilitating easy note-taking and drawing directly on the device. This feature significantly increases the calculator's utility, making it an excellent tool for students and professionals alike. **Hand-drawn Design**: The unique hand-drawn design of the calculator adds a creative flair, making it stand out from conventional calculators. This artistic touch not only enhances its aesthetic appeal but also makes it a more tool. **One-click Erase Function**: Equipped with a one-click erase function, this calculator allows for quick and efficient correction of errors. This feature saves time and reduces frustration, enabling smoother calculations and workflow. Color: Black Material: plastic Package Contents: 1*hand-drawn calculator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.