S: 180mm (7.08in) wide x 100mm (3.93in) high

M: 180 mm (7.08 inches) wide x 150 mm (5.90 inches) high

L: 240mm (9.44in) wide x 120mm (4.72in) high

An LED strip in the base illuminates the sculpted acrylic plate and is powered by a low-energy USB adapter.

Insert the acrylic sheet into the wooden base and turn it on. Assembling this LED sign is simple and easy.

When closed, the engraving on the acrylic plate will be white/transparent. Open it up and there will be a variety of color options.

This LED sign comes in 7 colors: Red, Blue, Green, Pink, Turquoise, Yellow and White. It also has 3 different auto color changing modes.

Each base has a long USB cable and mode/brighter/darker buttons. Use your own USB power plug or plug into a computer or other USB port.