Razer"s award-winning, proprietary Switchblade User Interface puts more control in your hands with ten dynamic adaptive tactile keys and an LCD panel. * Razer Switchblade UI features a wide array of applications such as our social media applications, game enhancing applications, and game specific applications. * 10 key-roll over in gaming mode. Actuate as many keys as you have fingers, and have all of them register accurately and quickly in game. * Razer Synapse 2.0 is cutting-edge, intuitive software that functions as the Razer Death Stalker Ultimate"s brain, automatically syncing the gaming keyboard to a cloud server to download driver and firmware updates, while saving your individual settings.