Acer K137i Portable DLP Home Theater Projector (White) The Acer K137i is the perfect lightweight, compact projector. With a design that can fit in the palm of your hand, this projector provides great mobility and ease-of-use. To enhance home entertainment experience, K137i is integrated with powerful 3Wx2 stereo, SRS sound effect speakers, users can fully enjoy the cinema-like performance at home This projector supports MHL connectivity (via an MHL/HDMI port), which means it can display uncompressed HDMI audio/video from any smartphone or mobile device that supports MHL.