Host hdd player will be a portable hard disk, media player, SD card reader, and backup device without computer. 1. Assess function: OTG functions make you easy to transfer or copy your computer, SD card, and other USB devise. SD card readers make you easy to assess pictures/data SD card. USB 2.0 interface, windows management, is convenient for your study, work and entertainment. 2. Edit function: Copy/remove/rename/ , and so on, for the files and folders in the HDD 3. Play function: AV program: Mpeg-1, mpeg-2, mpeg-4, divx, xvid, VCD, svcd, etc. music program: MP3, WMA pictures: JPEG 4. Display function: TV format: Pal /ntfs /auto 5. Extendable video output port: S-video/cvbs/ycbcr/ypbpr/vga/spdif 6. Multi-language 7. Capacity support: 2.5" 20g/40g/80g/100g hdd 8. Quick music function makes your HDD player like your MP3, ipod, CD... Etc. You could listen music anytime and anywhere with anyone. 9. Accessories: remote/race cable/battery case & adapter/travel charger/leather case/USB cable 10. Spec: power: DC 5.6v power consumption: <=800ma product dimension: 132 x 80 x 19 mm weight: 215g