Calculator with Notepad:Calculator can do more than just calculate,the writing tablet with stylus pen can record what you want.This desktop calculator supports calculations with up to 12-digits,the data is clear and easy to readtax calculation can be quick and easy. Lightweight and PortableThis pocket calculator weighs only 260g and portable design is easy to carry. It has one button battery and can be replaced any time without screw installation,you don't worry about the battery dying anymore. Healthy and Eco-friendly:The blue light-free LCD screen is used to protect eyes,when you are not using the basic calculator,you can put it on your desk as a notepad.It can be written repeatedly, reducing paper consumption and being eco-friendly.There is no need to use shredder to process the paper and it's a perfect office calculator. High-end business black, showing the atmosphere, fashionable business gray, suitable for both men and women. Repeated writing 5W+, no dust and ink, LCD handwriting screen: comfortable handwriting, realistic writing feel, no light and no blue light. Silicone buttons, with distinct bumps and convexities, comfortable to touch, soft touch buttons, not sour after pressing for a long time Type-C charging, long-term standby, no trouble in use. Lightweight, foldable in half, easy to carry, long-term standby, weighs only 0.12kg, 120 mA. The use time is about 1 year, and the weight is equivalent to an Apple mobile phone. Magnetic absorption stylus, not easy to lose, take it out comfortably, write as you like/ One-key lock screen, prevent accidental deletion of the lock screen button, writing does not consume power, and only uses power when clearing the screen. Quiet and no noise, refuse to interfere with the idea of going to work, suitable for working business, accounting calculations, and student calculations. Mute Design:Our desk calculator adopt high quality silicone button,which can bring you more comfortable touch and a quiet experience.When you are calculating the data,the mute button will not disturb others, suitable for working and learning. 1-year Extended Warranty:The product has 1 year extended warranty and detailed instructions,it can be replaced directly if there is a problem within the warranty period.You can contact us at any time, we will reply within 24 hours.