Desktop Calculator with Notepad:This calculator and notepad are designed in one piece,you can make notes while calculating,improve study and work efficiency.The calculator supports calculations with up to 12 digits and the calculator is the writing tablet,it is very convenient to take notes. Mute & One-key lock:Adopt high quality silicone button, feel comfortable, mute button others,suitable for daily calculations.At the same time,-key lock on the back prevents accidental deletion,make your work more productive. Healthy & :The blue light-free LCD screen is used to protect eyes,when you are not using the calculator,you can also put it on your desk as a notepad.It can be written repeatedly, reducing paper consumption and being environmentally friendly,there is no need to use a shredder to process the paper. Practical & Portable:This is a calculator with notepad,weighs only 5.3 oz.It is so compact that you can carry it in your pocket,can be quickly removed and used immediately when needed,convenient for taking notes on phone calls, quick notes, and meeting minutes. Colour:black Material:ABS Package Contents: 1 x calculators desktop Only the above package content, other products are not included. Note: Light 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.