Razer who have always been in a league of their own, specializing in PC gaming peripherals, have now entered the console gaming market. The Razer Onza is a professional controller for the 360. It has Razor Hyperesponse technology which gives the player instant feedback, adjustable tension analog sticks, Programmable multifunction button, an improved D-pad, and it is a wired controller for lag free gameplay.

Source: http://press.razerzone.com/content/view/408/101/