1. it does not require any additional device like a laptop or a PC. 2. it enables connectivity through Wifi and extenal 2G/3G. It does not require any additional device like a laptop or a PC.It enables connectivity through Wifi and external 2G/3G dongles.You can create/edit/save documents using the portable projector.Play movies and music.You can get audio output.USB connectivity.It can be used for Education, Business, Home.For education, it is really useful because the cost is low and the running cost is also very low. It needs less than 40W of power.

Portable projector with WiFi, Android 4.0 mini projector