The Logitech T-BC21 Trackman Red Marble USB Trackball Mouse is a reliable and efficient mouse that offers a unique trackball design for precise cursor movement. With its vibrant red color and USB connectivity, this mouse is both stylish and practical for everyday use. Tested for functionality, this product ensures a smooth and accurate pointing experience for users who prefer a trackball mouse. Ideal for those looking for a quality mouse with a different design that sets it apart from traditional mice.