Great Math Clock for Class------- Instead of traditional numbers, this wall clock features a different equation at each demarcation. Great for a classroom, office, study room, library, kitchen, bedroom, bathroom or any room in your home, school or business Silent Non-ticking Wall Clock------Silent non-ticking mechanism with sweeping movement, allows you to rest in silence. Precise quartz movements guarantee accurate time Easy to Hang and Read-----Back slot design offers easy installation, 1 non-trace hook included. Powered by one AA battery included, please use normal carbon battery.(Plus side of battery should be inserted first) Perfect Gift for Math Guy------A unique and fun way to track time,perfect for college professors, mathematics teachers, math lovers, students, engineers, scientists,aspiring mathematicians and number lovers Great choice for decoration-----Unique designed wall clock is a great decoration to office. In addition,our silent wall clocks also serve as kitchen, living room, bathroom, bedroom wall decor.This wall clock making your home looks more special Wall clock