Vivitek Qumi Q38 Black, Full HD 1080p Wifi LED Projector
Product Review (submitted on 5 January 2019):
The Q38 looks and feels like a premium device, and it performs well, throwing out a vibrant, rich-in-colour 1080p picture. It certainly is portable, even with the somewhat large power bank.
However, its portability comes at a price which ultimately is its Achilles heel - sound, or lack of. Its internal speakers output a meagre 2W which was not even adequate in a quiet environment. Using the audio out and connecting to an external speaker produced slightly better results, but only on battery power. As soon as mains power was connected, interference rendered any sound inaudible.
Remote control also needs to be aimed directly at rear of device to work.