The Logitech T-BB14 Trackman Marble Mouse is a white optical trackball mouse that offers ergonomic design for comfortable use. Made by Logitech, this USB trackball mouse features a two-button design and is ideal for those who prefer a trackball over a traditional mouse. With its optical tracking method, this mouse provides precise and efficient navigation for various computing tasks. Its sleek design and reliable connectivity make it a practical choice for users looking for a convenient and efficient pointing device.