Calculator, 12-Digit Calculator Basic Office Calculator Foldable Desktop Calculator for Battery Dual Powered-Calculator, 12-Digit Calculator Basic Office Calculator Foldable Desktop Calculator for Battery Dual Powered. [Eco-friendly]This calculator notepad is a combination of 6 inches calculator and LCD notepad. With the stylus pen attached to its side, you can be written repeatedly, reducing paper consumption, no need to use a shredder to process the paper. The calculators has a button, you can click this erase button to clear the full screen for writing repeatedly and protect personal privacy. [Solar Calculator with Writing Tablet]This is a solar and battery dual power calculator, which can be fully powered in any lit environment or powered by CR1220 battery(package included), no worry about the battery dying anymore. Our calculator is featuring with 12 digits display and LCD writing board, you can calculate and record it very easily, perfectly suitable student and business. [Mute Design & Eye Protection]Our calculator‘s keyboard’ re made of silicone material, soft touch keys, quiet and noise-free. With this calculator, you will not interfere with other people while calculating the data. Both the calculator screen and the handwriting board adopt LCD screens without blue light to protect eyes, ideal for working and learning. [Portable to Carry]The solar calculator is clamshell and the keyboard and writing board can be well protected. And this handwriting calculators is only 4 oz, lightweight to carry. Product size: 160mm x 78mm x 10mm. It is so compact that you can take it in your bag, pocket, or even purse, convenient for taking notes on phone calls, quick notes, and meeting minutes. [Widely Usage]Compared with the traditional basic calculator，our calculator with writing board and pen can be used to record data, also can practice dr