1. Calculator with Notepad: Have you ever encountered a situation where you needed to record a certain number during the calculation process but couldn't find a pen and paper to write it down? This financial calculator combined with a liquid crystal writing board can perfectly solve this problem. It was designed by a Japanese person who pursues paperless environmental protection. You can take notes while calculating, making phone calls, and attending meetings, thereby improving your learning and work efficiency. 2. Lightweight and Portable: This mini calculator weighs 210 grams and is equipped with a flip cover to protect the keyboard. You can put it in your pocket or bag. It is easy to carry and you can take it anywhere and take it out for use immediately when needed. 3. Healthy and Environmentally Friendly: Its liquid crystal screen adopts a blue - light - free design to protect your eyes. The writing board has a one - key clear function and supports repeated writing 50,000 times. The calculator does not require paper, ink, or dust. It reduces paper consumption and is very environmentally friendly. 4. Dimensions: 215 x 158 x 13 mm Material: ABS Color: Black Package Contents: - 1 calculator with notepad - 1 English instruction manual The package only includes the above - mentioned contents and does not include other products. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the actual one. The measurement error is allowed to be ±1 - 3 cm.