iFrogz EarPollution Toxix Headphones - Silver Fashionable On-the-Ear toxic headphones Extra-large speaker drivers Lightweight and ergonomically designed with rotational cups Designed with our famously comfortable aero foam ear cushions Compatible with iPhone iPod BlackBerry and other media with 3.5mm Jack Driver Unit: 30mm Impedance: 32 ohms Sensitivity: 113dB+/-3dB requency Response: 15Hz to 20 KHz Cord Length: 1.2M