Metal In-ear Earbuds Style Headphones For Kindle, Iphone, Ipad, Mp3, Laptops (Grey) Noise canceling, Sound Isolating, In-ear Design Six Different Gorgeous Colors, Cord Length 1.2m Driver unit: 10.0mm Response range: 20-20,000HZ, Impedance: 32 ohms Sensitivity:108 dB, Input: 3.5mm stereo plug