The Aerial7 Tank Headphones come locked and loaded with massive 57mm drivers designed to launch salvos of sonic awesomeness directly into your brain. These DJ-style headphones transition from booth duty to everyday life, thanks to included 1/4-inch and iPhone adapters. Product FeaturesMaterial: polymer, syntheticDriver: 57 mmFrequency Response: 5 Hz - 20 KHzInput Connection: 3.5 mm, 1/4 inCord Length: [coiled] 2.5 m; [straight] 1.2 mClaimed Weight: Recommended Use: DJing, everydayManufacturer Warranty: