DIY YOUR OWN MESSAGES with 90 pcs letters, symbols and numbers,Slide letters into rails to create words and sayings! Battery powered (4xAA not included) or USB powered (included USB cable), Strong magnetic in the back can be adsorbed on iron objects and not fall. Material:FMCP light box is made of high quality PS+ABS meterial with SMD LED combination. A6 size: L5.9\"x H4.13\"x W1.57\" / 15cm x10.5cm x4cm EASY TO ASSEMBLE:Create your personal message on desk or nightstand, Lightweight. Portable. Perfect for sharing messages for any occasion! Fully personalised lightbox with three rows for lettering, easy to hang on wall. For any occasion:Wedding,Birthday, Anniversary, Special Event, Inspirational Quote and Can be used at shop, cafe, restaurant, hotel lobby, corridor, exhibition hall, home and so on.