video module for card, invitation 1. customised size 2. Customised design 3. good sound ... , MP4 , etc3.The memory storage could be 128M, 256M, 512M, 1G, 2G, 4G, even big if customers have special requirements. 4 ... button, motion sensor, etc. 5, The dimension of the video card( thickness, width and length)Support USB upload video file Recharge ...