【Calculator With Notepad Function】This small calculator is combined with an LCD writing tablet, just press the erase button once after use. Touch pen fixed on one side of the board, which is not easy to lose and convenient for you to calculate and record at any time. And with large LCD screen and clear 12-digit display, improving your learning and working efficiency..【Sensitive Key & Slide Lock Botton】The calculator is made of high-quality ABS material, which offers more comfortable touch feels to your finger, after repeated press will not interfere with its sensitivity. What's more, an anti-deletion button is designed on the bottom of the calculator, using lock button to prevent accidental deletion of notes..【Solar & Battery Powered】There are 2 power ways of this caculator, solar and USB charging. The calculator is powered by solar pane, the writing board is powered by USB charging. When the solar power runs out, the battery also power the calculator. So don't worry about running out of power, one charge can support for half a year..【Lightweight & Portable】The compact calculator is adopted with foldable design, it's not only can protect the calculator keyboard and writeboard well, but also convenient to carry and use it when needed for immediate. Folding calculator can be taked in pockets, school bags, office. Ideal for taking quick notes during calculations, calls and meetings..【Wide Application】This multifunctional calculator is small and portable, suitable for office, school, shop, accounting calculations and various use scenarios. This pocket calculator is a wonderful gift to your friends, young students, workmates and family, they will love it! Great for minimalism and paperless, own it now!