Package: 1 EaIdeal for gamers who enjoy deep bass the SB45 features a dynamic element constructed of anisotropic ferrite magnet structures the deliver high sensitivity and reduced distortion for premium sound at all volume levels. Incorporating a frequency response of 18Hz 20 000Hz the SB45 delivers a full-range of sound that will bring your favorite games to life. Utilizing oxygen free copper voice coils for improved signal transmission and conduction sound comes through loud and clear. Whether youre alone or online the SB45s sound will be so efficient that youll hear your opponent before they even know youre there. Its large closed ear cups surround the ear for maximum isolation so you can stay focused on saving the world or kicking a forty-yard field goal.Soft leatherette ear cushions envelope your ears without creating pressure for long lasting comfort. Koss Clear Voice Technology (CVT) noise canceling electret condenser microphone eliminates excessive background noise for a greater ease of use with PC voice applications such as speech recognition. The SB45 has an adjustable headband to fit most head sizes. Built of durable plastic the SB45s headband can stand up to the rigors of daily wear and tear for a fits-like-new feel after years of use. The SB45 also folds up for compact storage to reduce pains from your desktop clutter and to conveniently fit in your briefcase or backpack if youre gaming on the road. Built to last the SB45 is covered under Koss No-Questions-Asked Lifetime Warranty the only warranty of its kind in the stereophone industry. Delivers High-sensitivity & Reduced Distortion--ideal For Gamers--features Anisotropic Ferrite Magnets--freq Resp: 18 Hz 20 Khz-Oxygen-free Copper Voice Coils Improve Signal Transmission & Conduction For A Clearer & Louder Sound--closed Ear Cups--soft Ear Cushions Reduce Pressure For Long-lasting Comfort-Clear Voice Technology (cvt) Eliminates Excessive Background Noise For Better Voice Quality--foldable--lifetime Warranty