so , I do a ton of research before make this purchase , and I be still blind-sided by poor design choice across the board on the pk301 . First of all , I be mac base , so in order to convert my video file -lrb- why do this not offer the ability to play back more codec ? -rrb- I have to load up handbrake . after several hour of completely waste time convert video to the claim acceptable codec and fail to have any of they work on the projector , I sit down and begin to search for a answer online -lrb- the proper info on how to handle the video file convert for mac user be not include in the manuel -rrb- I manage to figure out the very strict guideline for the file conversion process . I begin convert a few video to test the projector and put they on a 4gig microsd card . the first video I transfer be a 22 minute tv show . the file size come to be around 540mb . it do not work . I spend another half day struggle with this until I try change the file 's extension from . m4v to . mp4 . miraculously , once I do that , it play fine . would have be good to know this a day earlier . seriously ? seriously ? ok . so after all that , I finally have the proper -lrb- and somewhat tedious -rrb- direction on how to get these file prep to work on this thing . boy , let I tell you , you better not be the spontaneous type , because the the time it take to prep a video file for this thing be enough to kill the spirit of any group hope to watch a video outside on the fly . second major problem be the battery life . now , EVERY single write up I find online mention some fabled `` extended 5 hour battery '' for this thing . where ? where be it ? I 'll pay for it ! I have the money . 200 dollar ? fine ! fine ! where the hell be it ?! it do not exist . that be all there be to it . it be not real . do not buy this thing because of that `` 5 hour battery '' you have read about on every single tech blog that mention this projector , because it do NOT EXIST . so , as a alternative , there be third party adapter that do not come package with the proper cable to be use with the pk301 , so who need that ? yet another ridiculous brick wall separate I from really enjoy this projector . sure , you can find a extra batter -lrb- the exact same one that come with the projector -rrb- for 30 buck ... but where the hell be the 5 hour ? where ? where be IT?@!!!@!!!!! the next problem be the internal firmware . come on guy . Update please . and post the update on you website and make it easy to find and implement on both MAC and PC . this be just ridiculous . if one of my movie file be bigger than 2gigs it will not show up as a valid file ? be you serious ? why ? so I have to go through the messy process of trial and error in order to break my movie file up into multiple smaller file on order to use they on this projector ? this be absolutely unnecessary ! get in there and overhaul the firmware of this thing and update it ! make it better ! add more codec ! allow for the recognition of larger file ! release the extended battery ! what the hell be the matter with this company ? it could be so easy to dominate the pico projector market with these simple product adjustment and additional support . the other problem here be the provide cable . if you want to use you iphone or ipad , you 'll need to dig around and figure out what sort of adapter and nonsense you 'll need . I have not bother yet , but I be sure it will probably set I back another couple of hundred buck and about 4 daisy chained cable before I have thing set up . from what I have read online you 'll get you Iphone or Ipad connect , but the slightest movement could result in the cable lose they connection . you 'll have to jiggle they in order to get it back up . wonderful . why not one cable ? directly from the Iphone\/Ipad , right into the projector via usb or mini hdmus ? do this exist ? well , if it do , I be sorry I do not spend the better part of my week painstakingly search the deepest part of the internet in order to find it . I guess it be my fault . I 'll get right on that . let I free up my schedule for the rest of the month so I can devote every wake moment to comb the endless span of the internet in order to find this nonexistent direct connection ipad\/iphone adapter and `` 5 hour '' extend battery . to be completely honest , I would not be this upset if this product be not so so close to be incredible . I have thousand of movie and tv show save as AVI , DIVX , etc. . I be ready and willing to spend more money on a -lrb- good -rrb- extend battery . I would spend money on a simple Iphone \/ Ipad adapter . come ON .