The AdvantagesThe 3D numbers are combined by three parts, acrylic mirror surface, EVA and the adhesive.The acrylic mirror surface makes the clock gloss and sense of texture.The EVA part make the wall clock three dimensional, applicable to any atmosphere of the interior.The high quality adhesive ensure the clock stay on the wall for long.Note:Please note that a protective film is on the acrylic number surface, please tear the film off after installing the clock. large wall clockAbout Comfirming the Position of the NumbersIt’s better to ask a second person's opinion to help with the leveling and spacing of the numbers from one another.NOT remove all of the paper from the sticky backs of the foam until you are 100% certain they’re at where you want them and perfectly aligned.Installing Tips:About the Installation StepsNOT attach the mirrored pieces to the foam parts until you have them all positioned in their final locations to avoid cracking them.NOT attempt to attach the clock mechanism or the fragile hands onto the base until you're all done with everything else.SuggestionIf want to remove the numbers just heat the glue up with a heat gun or hair dryer with high heat settings. It shouldn't damage your paint.Non-ticking movement, absolutely silent