Rocketbook Core Letter A4 Reusable Smart Notebook 32 Pages Dot Grid Black 515906The Rocketbook Core Smart Reusable Notebook provides a classic pen and paper experience, yet is built for the digital age. Although it feels like a traditional notebook, the Core is endlessly reusable and connected to all of your favorite cloud services. When you write using the gel pen, your writing sticks to Rocketbook pages like regular paper. But add a drop of water and the notebook erases like magic. We designed the Core for those who want an