The Logi ERGO M575S Mouse TR0006 is a wireless trackball mouse in a sleek black and blue color scheme, featuring an ergonomic design for comfortable use. This mouse, model M585S, is from Logitech and offers optical tracking for precise cursor movement. With a hard carry case for protection, this mouse is perfect for on-the-go use and ensures a clean and organized workspace. Made in China, this mouse has 5 buttons for easy navigation and is a stylish and functional choice for users looking for a reliable trackball mouse.Very good,hardly used.