SODIAL(R) 2.4G Rechargeable Wireless Optical Mouse with 4-Port USB Hub/Charging Dock & Retractable Cable for Desktop Laptop (Gray) 2.4GHz wireless transmission up to 10 meters operating distance. Multi-functional USB charging dock, It also be a receiver and a 4-port hub. Two buttons on the left side of mouse are to forward/backward internet page. With retractable cable, you can use it as a wired mouse while charging. Intelligent connectivity, plug-and play. Ergonomically design, comfortable to use. High accurate cursor and extremely sensitive.