Razer BlackShark Expert 2.0 - Over Ear Noise Isolating PC Gaming Headset (Certified Refurbished) This Certified Refurbished product is tested & certified to work like-new. The product is backed by a 90 day warranty. 40mm neodymium magnet stereo drivers with copper-clad aluminum voice coil drivers With the circumaural design and leatherette sealant of the headset's ear cups, block out all unwanted, ambient noise and only hear the awesome, intense audio of your games and music The Razer BlackShark's detachable boom microphone makes this a highly versatile headset, at home both at a gaming setup and out on the streets for music playback The combined audio/mic cable works with all portable audio/mobile/computing devices including the iPod, iPhone, iPad, Kindle Fire, Android phones, Razer Blade, MacBook Pro, or today's newer Ultrabooks