Compact wireless mouse allows for smooth, speedy navigating through large documents and web pages thanks to its forward/back thumb buttons and fast-scrolling, clickable wheel 2.4 GHz wireless connection with a 33-foot range; uses AES-128 encryption for added security; this mouse uses a small USB receiver that can stay plugged into your computer without obstructing other ports Laser sensor works on most surfaces, including glass; ergonomic profile fits perfectly in the palm of the hand, ensuring comfortable use