Features: size:40*40cm material: plastic + aluminum power 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.