12 inch promotion GPRS open frame digital signage 1.Local tempered glass ... logo 2.with the base,easy to move 12 inch promotion GPRS open frame digital signage Indoor GPRS digital signage, ... with USB port*Capacity of Flash card supported: 64MB-32GB*File format: MPEG1, MPEG2, MPEG4, MP3, AVI, VOB, JPG, ... list.;*Set the on/off timer, can play appointed file in appointed time;*USB copy files to CF/SD card ...