Patented

Blackboard 2.0 Smart Pen Reusable Notebook Set | Patented LCD & Cloud Sync Tech | Endless Pages, Dark Mode | Save & Erase with Smart Pen | Free App for iOS & Android | Digital Notepad & Drawing Tablet

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Blackboard 2.0 Smart Pen Reusable Notebook Set | Patented LCD & Cloud Sync Tech | Endless Pages, Dark Mode | Save & Erase with Smart Pen | Free App for iOS & Android | Digital Notepad & Drawing Tablet
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