... for you to choose: (specially for pico projector)a. PCBA board 301: Multimedia I/O: HDMI in, USB2. ... 0, SD card, A/V in, VGA, Audio outvideo compatibility ... Yes, 1 Hour battery lifeProjector Sample: Avaliableb.PCBA board 302: Android 2.1OS with WIFI I/O: ... lifeProjector Sample: Avaliabled. PCBA board 304: Accessory projector I/O: HDMI in,A/V in, VGA, Audio ...