Use the Hdd Mp4 player to copy your memory card files from/to a 2.5" harddisk via the OTG WITHOUT USING ANY COMPUTER! Then play image/movie/music files by using its superior 3.5" TFT color LCD monitor and sound system or even play it on a TV using the AV/out. You can also record the tv/movies in a dvd resolution (640x480) Features: 　 ¡±                3.5" High Resolution 640 x 480 Color TFT monitor. ¡±                Real time display Jpeg, Mp4(720 x 480 avi) and play Mp3 files ¡±                Digital video recording up to VGA (640 x 480) Resolution.  ¡±                Power supply: Internal Li-ion (1600mAh) Battery universal AC/DC power adapter.  ¡±                Mp3 function: It can play 8-320 kbps MP3 files. ¡±                High speed portable harddisk via USB connection with PC ¡±                OTG function, connecting to USB devices to read/write ¡±              Hard disk file system: FAT16/FAT32 ¡±                Support 10G~160G Hard Disk: 2.5" hard disk (Not included in the package) ¡±                Input: 100v~240v ¡±                PC Port: USB 2.0 standard ¡±                Operation System: Window 98SE/Windows ME/Windows XP Windows2000/Linux 2.4/Mac OS 8.6 Later    Buy now with a Hitachi 40GB, 80GB or 120GB 2.5" 5400rpm hard drive can enjoy combine shipping. Packages included: ¡±                Hdd Mp4 Player ¡±                Ear Phone ¡±                USB Line ¡±                OTG and AV Lines ¡±                CD (Driver) ¡±                Charger ¡±                User Manual