Livescribe A5 Grid Notebook #1-4 (4-pack) Works with all Livescribe smartpens Livescribe smartpens only work with Livescribe dot paper 5mm x 5mm grid size Shortcut Buttons: assign your favorite smartpen applications for quick access A5 size dot paper: 148mm  210mm (5.8in x 8.3in) 80 perforated sheets (160 pages) per notebook