Dealglad Blue LED Fluorescent Message Board with Highlighter Digital Alarm Clock with 4 port USB HUB Size: 138*65*116mm. Materials: ABS plastic and acrylic base. With 4-Port USB HUB, convenient for connecting USB devices Fluorescent message board with pen marker, to leave well-marked message easily 16 world famouse songs and BiBi sound and multi-color LCD backlight Powered by 3 x AAA batteries or USB cable (Battery NOT included)