Provides a classic pen & paper experience, yet is built for the digital age. Although it feels like a traditional notebook, the Rocketbook Core is endlessly reusable & connected to all of your favorite cloud services. When you write using any pen from the Pilot FriXion line, your writing sticks to Rocketbook Core pages like regular paper; but when you add a drop of water, the notebook erases like magic. Blast your handwritten notes to popular cloud services like Google Drive, Dropbox, Evernote, OneNote, Slack, iCloud, email & more using the free Rocketbook application for iOS & Android. The app's OCR functions can also automatically name your files & transcribe your notes to text! Pocket-Sized Indicator: N; Book-Binding Type: Spiral-Coil; Book-Binding Edge: Side.