It has a capacity of 2-8 GB, can choose according to need, 10 mb can store about 1 minute video advertisement. General use CF card, while supporting SD card, MMC card, Ms Card, U Disk and so on. Super Timing Function: 7 days a week, 24 hours a day without staff management. Support playlist function, can be set to play the specified file every day. Has the security lock function: Has the anti-theft lock function, prevents the machine or the storage device to be stolen.The surface of the LCD screen is protected by a super thin toughened glass or acrylic protective layer to protect the LCD screen from artificial damage. The special installation method of back plate fastening is simple, firm and does not destroy the structure attached to the hanger. Password Lock function: You can set the machine password, every time you change the program must enter the password, thus avoiding the artificial malicious change CF card, play other programs. 0.2475(H)0.2475 (V). Bus TV Monitor Advertising Display.