Easy to Learn and Teach: This is a professional wall clock for children's learning. With each quarter divided into a color, so children can learn terms like \"o'clock\", \"quarter past\", \"half past\", and \"quarter to\". In addition, the 5-minute intervals around the outside can be very helpful for reading the time. Early Development: We designed the clock to help when teaching our own child to read the time. To learn time effectively, the design must be easy to understand; marking each quarter with a different color would help your child quickly create an association between the numbers and their location. Studies show that certain colors greatly affect a child's mood. This clock's design has been optimized to have a strong learning effect. Silent Sweep Movement: This analog wall clock for children has a robust, durable design and a silent sweep movement, freeing you and the rest of the family from the annoying ticking sound. The silent design is also excellent for classrooms, as it keeps distractions away! Long Battery Life: The low-power quartz movement requires one AA battery (not included); please use a regular carbon battery rather than an alkaline battery, which can operate for a long time and maintain time accuracy.