Helper for managing various files. In your pen, easy and fast

What can this app do?

- Connect the pen to your mobile To easily manage files without having to plug a pen into the computer
- Can help you download books to the pen wirelessly via WiFi, making it easy, convenient, fast
- Control the music on / off, choose the music, adjust - increase the volume
- See pen usage statistics on how many books have been read And how long does it take in each book?
- See how much percentage battery has been used