Precision button instantly increases or decreases the sensitivity, perfect for in-game sniping. With F.L.U.X. desktop software, you can create unlimited profiles for your mouse and quickly switch between the top four using the profile button. Built with a lightweight design, the R.A.T. 4+ only weighs 90g, ideal to take on-the-go. Create the perfect grip with the adjustable palm rest, letting you play in comfort. And with industry-leading OMRON switches, the R.A.T. 4+ can keep up with the even most furious clicker, with a 20 million click lifetime. Connector/Port/Interface: USB 2.0; Left/Right Hand Use: Left/Right; Mouse Technology: Optical; Wired/Wireless: Wired.