Hear the unfair advantage firsthand and be the one to beat with the Razer Kraken Ultimate-a PC gaming headset built for the ultimate competitive gaming experience. With threats lurking all around you, it\\\'s time to go on the offensive and let them know who\\\'s hunting who. This is a refurbished item in A+ grade condition. Specifications: Compatibility: PC Colour: Black & Green Headphone frequency response: 20 Hz - 20kHz Driver size: 50mm Noise-cancelling microphone: No Ear cup type: Over Ear Foldable: No Adjustable headband: Yes Interface: USB Wireless: No Volume control: Mute, Volume Mute: Yes Dimensions: 113 x 237 x 223 mm Weight: 700g