37" Advertising Monitor ( LCD, Advertising ,Monitor ) Technical Parameters: (LCD,Advertising.monitor) ... root directory,20 - time,Attention1,bmp must be 16 colors, length < 160 Pixel, height < 90 pixel8.Support OTG function,Copy program ... the speed . 13. Support the instant upgrade of software. LCD 37 " Advertising Monitor ( LCD, Advertising , Monitor)