The Creative Magnetic Ball Clock Perpetual Wall Calendar is a unique and stylish addition to any home decor. Made with high-quality ABS plastic and powerful magnets, this calendar is not only functional but also visually appealing. With its compact size of 23cm x 2.5cm and weight of 600g, it is perfect for a desk or wall. Simply assemble the pieces and use the small balls to manually change the date, month, and period. The magnetic balls and ring attract each other, while the cotton thread holds the ball in place to indicate the month. This practical and versatile calendar is a great educational tool and makes for a thoughtful gift.