Description: Material: The math wall clock is made of Acrylic, is lightweight and sturdy, has a long service lifeWall Clock: The wall clock adopts a Math elements design, is creative and interesting, brings unique to your space, and provides accurate time, and easy watchingNo Ticking: Decorative wall clock with silent move, for your sleep, study, and work to provide a quiet spaceEasy installation: This creative clock is easy and quick to install, without complicated tools or steps, enjoy accurate time immediately (need 1x AA carbon battery, not included)Wide Application: Wall clock is suitable as a fashionable decoration for rooms such as homes, living rooms, bedrooms, offices, classrooms etc, and it's a great gift for math lovers Specification: Material: Acrylic Size Chart: 30 cm x 30 cm or 11.81 inch x 11.81 inch Package Includes: 1xMath Wall Clock Note: Please allow slightly errors 1-2cm or 0.39-0.79inch differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.