ZTE Projector The projector has a display screen and runs on Android OS ((The Android system is old and does not accept new programs or some updates)). It has a built-in battery and an internal speaker. Very clean, comes with all its cables, a bag, and a tripod stand. There is an HDMI port, a USB port, an AUX port, and an external memory slot. You can connect a PlayStation, satellite receiver, or anything that works with HDMI. The speaker in the external video is not for sale.