Dreiklang-be smart Triad rewritable notebook writing pad,DIN A4, lined, with iOS/Android app in the

For students, engineers, designers, managers, and anyone who wants to be more organized, creative, and productive. Comes with a standard pen and a cloth. A4 size: 20 lined sheets that can be easily wiped clean. Each page can be reused up to 500 times! Free app "Cam Scanner" allows you to digitize pages as PDF, assign note file names, manage in folders, edit as needed, and find quickly.