Product Specification: Material: Environmental friendly and non-toxic wooden material. Color: multi-colors. Wooden clock with 12 removable pieces. Size: 8.58.5 inches. Different colors on the same tool will be more attractive to your child. They are willing to try a few more times on their favorite colors, develop your child's sensory ability in visual cognition. The color of the clock and the color of the card slot are different and easy to identify. You can complete the process of your child's series of basic recognition of numbers to addition and subtraction between numbers. The numbers in different shapes for each slot are easy to pick up and put down. More suitable for small hands to grasp, this clock puzzle is simple to operate each block. Clock-shaped wooden toys that cultivate your child's time concept from an early age. The minute hand and the hour hand adjust the angle according to the direction in which your hand rotates. They are all manually adjusted, It is more convenient for you to switch the time at any time.