This is a notebook where you write words, scan them with your smartphone, and then use the vocabulary list in the app. I opened it, but it's unused. Please be aware of any scratches on the cover due to storage. - Brand: Pentel - Type: Smatan 12-line type - Features: A notebook that allows you to memorize hands-free - Compatible OS: iOS / Android Thank you for viewing. English vocabulary Language learning University entrance exams Common Test Center Exam Junior high school entrance exams Qualification exams