Material: The doll is made of EVA foam and acrylic mirror surface (including a protective film, removable when installing), waterproof, environmentally friendly, not easy to deform, easy to install and remove . Adjustable size: diameter 70cm-120cm, frameless design, you can easily enlarge or reduce the diameter of the clock to fit different wall sizes. Large size is suitable for underfilling. Easy Installation: Self-adhesive sticker and auxiliary scale for easy installation. Each number has a protective film, please tear it off after installation. Silent motor: high-quality silent movement mechanism, no noise, no interference. Powered by AA batteries (1.2~1.5V, non-alkaline batteries) with CE certification, high quality and long service life. Wide range of uses: suitable for smooth walls in living room, bedroom children's room, dining room, kitchen, office, bathroom, cafe, hallway, etc. It is a great gift for family and friends.