Ultra-slim clear portable calculator, touching screen calculator without button keys. LCD display digits, 8-digit display makes the calculator easy to use & Portable calculator can handheld or desktop use. Just need a little sunshine then you could use this calculator, no matter you are indoor or outdoor. It is not only super easy to save money and very convenient. It is very small, beautiful, and easy to carry, no matter you are out for traveling or playing, you could also bring it with you!