1. Exquisite appearance, ultra-thin, the minimum thickness is 20mm and the minimum weight is 0.5 kilogram. 2. Exclusive flash-prevention function, which lengthens the life span of the light tube. 3. Even illumination, remarkable visual effect. 4. Easily change pictures. LED pop is double sided, snap frame slim light box. The words and photos on them are engraved on it. Customer size is available. There are three colors for your choice: Red, blue and green.