Easy to learn and teach: This is a professional wall clock for children's learning. Each quarter is divided into a color, so children can learn terms like \"0' clock 00\", \"Quarter past\", \"Half past\" and \"Quarter to\". In addition, the 5-step markings around the outside can be very helpful in telling the time. Early development: We designed the clock to help when teaching our own child to read time. To learn time effectively, the design must be easy to understand, marking each quarter with a different color would be helpful for your child to quickly create an association between the numbers and where they are. Studies show that certain colors greatly affect a child's mood. The colors on this clock have been optimized to have a strong learning impact. Silent sweep movement: This analog wall clock for children has a robust, durable design and a silent sweep movement, which saves you and the rest of the family from the annoying ticking sound. The silent design is perfect for classrooms, as it keeps distractions away! Long battery life: Low-power quartz movement requires one AA battery (not included), use a regular carbon battery instead of an alkaline battery which can work for a long time and with time accuracy.