Features:Size：40*40cmMaterial: Plastic + AluminumPower supply: 1xAA(not included)Package include :1x Wall sticker clock (NO battery)* The wall clock is 3D effect* Easy to install and remove the sticker* Alloy clock face,aluminum clock pointer and EVA foam stickers;* The clock finishing size is depends on your preference to decorate your wall, DIY distance from different digits, and DIY shape of the digits* The decals can be applied on all smooth surfaces,such as Walls, Doors, Windows, Closets, Plastic, Metal, Tiles etc.Warm Tips:* The movement is a precision instrument , install pointer required both thumbs pressed into the corresponding location , and then tighten the screw. Time was accurate as long as the needles were fixed firmly.* It is recommended to use an AA carbon battery. Do not use high-current battery.* This product is suitable for smooth walls,gray walls or wallpaper wall will cause the adhesive properties of the surface behind stickers decrease.