Romantic LED Luminous Fluorescent Message Board Digital Alarm Clock Night Light Size: 138*65*116mm.Memo board with highlighter matched USB hub: with 4 ports USB 2.0 hub.Power supply: USB charging port or AAA battery (Batteries not included) Materials: High-quality plastic material and acrylic base 16 world famouse songs and BiBi sound and multi-color LCD backlight You can write any words on the board what you like. At night, you can read the words on the LED luminous screen board