... 4GB USB download & recharge Video greeting card module 1. Material: greeting card + TFT screen + USB port 2 ... 3. Memory Device: 128MB- 2GB flash or SD card memory 4. Battery: 300mAh,600mAh, 1000mAh, 1200mAh ... battery by USB 10. Functions: play on open card, push buttons, rewind, next, pause, volume ... celebration, Business advertising, etc 12. Your custom card and function design are welcome 13. Package: ...