1. Clock surface: round. Diameter: 30 cm. The surface of our wall clock is made of high-density fiberboard with printing and no border. Large and clear Roman/Arabic numerals make it easy to read from all directions. 2. Clock movement: high-quality quartz analog movement behind the surface works silently to keep the time accurate. It will provide you with a quiet non-ticketing environment and help you track the time accurately. 3. Battery power supply: This classic clock is powered by standard AA battery. We recommend using dual a carbon zinc battery. Please note that the battery is not included in the package. 4. User manual: The lock hole opening on the top of the core cover allows you to easily hang it on the wall. To set, first point all three pointers at 12 o'clock and make sure they are at the same level without bending, then open one AA battery and set the time by turning the gear on the back of the clock (above the battery slot). 5. Application: Our beautiful and elegant round wall clock integrates with any home decoration, and is applicable to living room, kitchen, bedroom, office, classroom, dining room, nursery, etc. This will be an amazing accent of your beautiful home decoration. It is also a good gift for family, friends and colleagues. Please note that this wall clock is not suitable for outdoor use.