Material: Made of high-density EVA foam and acrylic mirror, it has good adhesion as well as water resistance with perfect stability. Eco-friendly, non-toxic and safe for children. DIY large wall clocks: large numbers with 3D effect, easy to read. The finishing of the wall clock depends on your preference to decorate your wall. Minimum diameter: 100 cm, maximum diameter up to 120 cm. Mechanism: Silent periodic movement, silent movement, silent clock give you a peaceful night. Battery: Battery: AA 1.5V batteries (not included). Note: Please do not use too much power supply battery, otherwise the movement will be interrupted. When you receive the wall clock, the wall clock has a blue protective film. Please tear out the blue protective film, then the wall clock will show the color you bought. The blue protective film prevents the watch from being scratched during transport. Opportunity. Suitable for smooth walls of living room, children's room, dining room, kitchen, office, bathroom, cafe, hallway, etc.Can be used for gifts, skills, business gifts, holiday gifts, home decoration. Specification: Material: EVA, Acrylic. Hour hand length: 31 cm. Minute hand length: 39 cm. Watch case size: 12 x 2 cm (diameter x thickness). Reference size (diameter): 90-100 cm (standard). Timing accuracy: -0.8~+1.2 seconds/day. Power supply: Requires 1 AA battery (not included). Silver. Contents of the box: 1 * watch sticker 1 wall clock (without battery).