Smartpen Writing Set:  This smart digital pen set includes everything you need to start writing digitally – a smart pen, a 10-inch writing pad, an A5 notebook, and 20 sheets of B5 paper. Additionally, the package includes 2 plastic refills, 4 ballpoint pen liquid refills, a USB recharging cable, and a user manual. With everything included in the package, you can start writing as soon as you receive it. Real Time Transmission: The smart notepad uses advanced BT 5.0 chip and high-precision electromagnetic sensor technology, allowing it to transfer the content you write in your notebook to your mobile screen in real-time by using the “Boardpen ” or  “Ophaya ” APP. The APP is compatible with both iOS and Android systems and can be downloaded from Google Play or App Store. Fine quality, Never Miss A Word: Used with the exclusive invisible dot matrix recognition technology, our Smart Digital Pen adopts dual infrared camera to recognize content with high sensitivity, which can be written at any Angle of 360°and accurately capture of everything you write, you hear, you draw, then digitally stored and shared the content you write in real time. One-click Storing and Sharing:  Just click the corresponding icon to save the current writing content and automatically open the next page. Easily access your notes, inspiration, drawings and doodles from mobile device and one-click share as images or PDF with your classmates, teammates & colleagues. Rich Function: More functions can be realized with the App and the notebook. Support audio recording by tap the record button on the notebook; There are 4 writing colors to switch; Available to write offline, after writing, you can connect to BT and transfer to the APP. The App is capable to restore the writing trajectory, showing the minutiae.