Logitech G602 uses a 500 MHz USB receiver not included with this mouse. I bought this mouse as an addition to my PC setup when it was on the market and shortly replaced it with a wired mouse because the mouse was too nice to use as a conventional mouse. I put it away in storage but over the years: lost the receiver and hence it is not available. However; it is in great shape and not flawed in any way. Definitely a collector's item, the USB receiver can be purchased separately. The fact that it uses a 500 MHz receiver indicates the mouses performance and the thing has 11 buttons including the scroll you can push. Also can change between sensitivities with the click of a button and has 6 buttons on the side you can use in place of hotkeys.