Programmable High Quality LED Scrolling Sign 39.5x6.5" RS232 USB Power Mounting Ultra Bright Indoor use only ,Size (W x H): 39" x 5" approx.Ultra Thin Programmable Scrolling message display in RED Green Yellow colour usb Memory Controller , Indoor only, No waterproof, can not face sunshine. 30 different display effects Newest design, Plug and Play, only one Memory Disk is enough for control