Alrens(TM)Birds on Tree Branches 3D Wall Clock Acrylic Mirror Quartz Watch horloge reloj de pared duvar saati Living Room Children's Room Decor Wall Stickers Art Material: Acrylic. Not Plastic . Acrylic's cost is 3 times higher than plastic. Finished Size:30cm *50cm /11.8"*19.7"(DIY Free Size). There is a protect film on the surface. Please tear it off after pasting mirror sticker on the wall. It looks very shiny! Easy to stick.Easily removable without damaging your wall.No harm to the environment and health. Battery:AA batteries (Not included).