The Rocketbook Core Smart Reusable Notebook offers a classic pen-and-paper experience while being designed for the digital age. Although it feels like a traditional notebook, the Core is endlessly reusable and connects with all your favorite cloud services. When you write with a pen from the Pilot FriXion line, your writing appears just like on regular paper on Rocketbook pages. However, with just a drop of water, the notebook magically erases. The Core is designed for those who want a notebook that can be reused endlessly for years, if not a lifetime. The Core features pages made from synthetic materials that provide an extremely smooth writing experience. With the free Rocketbook app for iOS and Android, you can send your handwritten notes to popular cloud services. The app's OCR features can also automatically name your files and convert your notes into text.