The Logitech RF Cordless Mouse Receiver Model C-BL4-MSE is a black wireless receiver specifically designed for Logitech mice. It features optical tracking method for precise cursor movement and has a compact design with a height of 1 inch, making it convenient for use. With free shipping included, this receiver offers a hassle-free solution for connecting your wireless mouse to your computer for a seamless computing experience. Made in China, this receiver ensures reliable connectivity with ease.