i buy this for presentation of tax and financial seminar . i need something easily carry and connect . it be sooooo small ! but very powerful and impressive . i buy a flash drive and download the power point and use the projector exclusively . i have to use the power cord to get a bright picture - without it be a good picture but not bright . for I , use the remote be a big problem . the remote only work while stand behind the unit . i like to stand away and walk around , make contact with my audiance so i have to have another person stand at the unit and use the remote . might not be a problem for you if you be ok with stand behind the projector . the picture be clear and the `` run '' noise of the unit not bad . i have recommend it to other associate .