iFrogz EarPollution Plugz Earbuds with Mic - Red Plugz deliver super-deep bass, smooth, undistorted highs, and crystal clear vocals. Connectivity Technology: Wired Plugz come with three tip sizes, to fit your ear canal Compatible with iPhone, iPod, BlackBerry, and any other media device with a 3.5 mm jack. Includes convenient in-line microphone to allow enjoyment of in-depth acoustic tuning, without missing calls from your mobile phone. Driver Unit: 9mm neodymium - Impedance: 32 ohms - Sensitivity: 98dB+/-3dB at 1KHz - Frequency Response: 30 Hz to 20 kHz - Cord Length: 1.2 meters Driver unit: 9mm Impedance: 32 ohms Sensitivity: 98 dB +/- 3 dB at 1 Khz Cord Length: 1.25 m Plug: 3.5 mm