the 3M mp160 be currently 3M 's upper middle of the road pocket projector . I can not say I fall in love with this product when I first receive it , but its usefulness become more apparent with time . I recommend it , but with very strong reservtions\/warnings . pro : exceptionally portable which allow you to present information in way not previously possible that be about it . however , this pro be bigger than one might think . but first , the negative : con : price lack of wi-fus and bluetooth connectivity connection cable provide limit how you can use horrible user manual . actually , what manual ? it be a pamphlet with almost no information provide at all . 32 lumen . this projector be not go to work in a light room as soon as I open the box and try to use the mp160us immediately wish for the functionality of the mp180 , it be more expensive relative . I really want wi-fus and bluetooth . and I want to use it with my 4 year old ipod , but the projector will not work with it . I have to borrow a newer model to get it to work . the major selling point of this product be its portability . I can not imagine hook it up to a computer or dvd player of any kind . the only way this product shine be when it be couple with a wi-fi enable device such as a ipod touch . it be only then that the m160 become a portable teaching tool . I could see this be use by coach , teacher , or anyone who have to sometimes give brief presentation . and I do mean brief . the lack of light strength and the tiny tiny speaker would make more than 5 minute use unbearable . for I personally , I plan to use this to explain new board game to my board gaming meetup group . instructional video on how to play game typically run 5 to 10 minute . Perfect . this same idea could be use by other in similar situation . E.g. a coach who want to quickly show a short segment of a game post to the net in order to teach player . but be it worth it ? I honestly can not say . you have to judge for yourself and keep the limitation in mind . and definitely , without question , view this product as only half of what you need . a wi-fi enable ipod be necessary to make full use of the m160 .