... Magnetic control switch.Open the card,power on and play video automaticly, close the card,power off and stop ... playing 3. Charge: There are two charging modes: 1.Connect to computer via MIC ... adapter. During the charging process,pls be sure the card is closed. The charging time is 3~4 ... hours. 4. Attention: When using the card, it cannot be blended, patted and dropped.You ...