<p>【Special Design】The black dial is designed to look like a blackboard with each math equation painted to look like white chalk. Instead of traditional numbers, this wall clock has a cha derent equation,A unique and creative way to keep track of time, this wall clock is a fun and challenging brain exercise As the clock ticks, the hands move around the dial indicating the time of day through a different math problem for each hour. A unique and creative way to keep track of time, this wall clock is a fun and challenging brain exercise. 【High Quality Material】This analog display wall clock is made of high quality acrylic material with white letters and numbers, perfect for classrooms or office.【Classroom Decoration】A very fashion decoration for the wall, especially for classroom, office and study room as well as an ideal gift for your friends or their children For home use, the clock will add a modern finishing touch to your each piece【Application】Ideal for the budding math student or anyone who wants something a little different in a clock. For the classroom, study room, living room, girls kids room, office.A unique gift idea, a fun gift for a math teacher in their class</p>Note: Data are all measurements manual, please allow 1-82cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.