The Adesso IMOUSE T40 is a programmable desktop trackball mouse with an ergonomic design for comfortable use. It is wireless with a range of 10 feet and features a nano receiver for easy connectivity. The mouse is amofferextrous and has an on/off switch for convenience. It is compatible with various Windows operating systems and has a sleek black and red color design. Certified with FCC, CE, and WERCS, this Adesso mouse is an efficient and stylish choice for computer users looking for a reliable input device.