Next-gen HERO optical sensor for unrivaled performance and power efficiency delivering 500 hours of non-stop gaming. AA batteries required Advanced LIGHTSPEED wireless technology for super-fast 1 ms response time and faster than wired performance Connect to multiple devices using either LIGHTSPEED or Bluetooth and easily switch between the two with a push of a button Built for comfort with an ergonomically-designed, lightweight, contoured body. Adjust weight by using one or two batteries 6 programmable buttons and on-board memory to store your favorite settings. Works with PC, Mac, tablets with Android and iOS