Model Number: K-70VC-D4 Key Specifications/Special Features: 1. 7-inch video greeting card size A5/A4 size2. Resolution: 800 * 480p3. Video format AVI (xvid), WMV (SP/MP), H.264 BP, FLV, RM/RMVB, H.263 and other formats to full D1 (720 * 576) 30fps video file playback4. Materials: paper card + TFT screen + USB port5. Built-in memory: 128MB6. One-button control, or plurality of different video playback control buttons, respectively7. Variety of programs and function selection8. Built-in rechargeable Lithium battery9. Power: built-in 3.7V rechargeable Lithium battery or USB 5V passenger power adapter10. Charging via a USB cable, you can upload and download videos11.USB interface: 2.012. Video and print content can be customized by the customer13. Mag switch simple and convenient operation: open greeting cards that play video; closed greeting cards, video close14. System requirements: XP/Vista/Windows 7/mac and the like