The Nulea M505 Wireless Trackball Mouse is a sleek black mouse with a unique trackball design, making it easy to navigate and control on your computer. This mouse features wireless connectivity via Bluetooth or USB, optical tracking method, and a maximum DPI of 1600 for precise movements. It also includes ergonomic design and is rechargeable, making it convenient and efficient for everyday use. With its compact dimensions of 6.6" length, 2.2" height, and 4.2" width, this mouse is perfect for on-the-go use and offers a comfortable grip for extended sessions.