3D Hologram Fan Display-APP Controlled 16.9 Inch Holographic Projection LED Fan Display Advertising Projector with 256 LEDs 800+ Free 3D Video Library for Business Store Signs, Bar, Event, Exhibition

Q: Does the protection cover reduce fan spinning noise?

Yes, if the cover added, the nosie will reduce a lot. And cover can protect people from touch accident

Q: Whats the difference between the 2 blade version and the 4 blade version?

1st, resolution difference,4 better than 2, 2nd, spinning speed, 2 faster than 4 and maybe other difference, others can add to this question

Q: For example,if we can do 3d modeling, can i upload my own designs to the 3D holofan?

We have a free 3D Hologram video libary for you to download, so many different interesting 3d effects. And if you have your own 3d Design videos, our holofan also support the app upload via Wifi connection. Pls check the product listing video guide. if you cant get how to make it work, feel free to mail us: info@enoptech.com for aftersales service.