ZAGG ZAGGSMBUDBLK Smartbuds for iPhones (Black with Mic) Built-in noise canceling mic Answer and hang up calls ZAGGsmartbuds music control for iPhone Premium length, tangle-free cord In-line volume control Built-in noise canceling mic - Answer and hang up calls - ZAGG smartbuds music control for iPhone Premium length and tangle-free cord - In-line volume control - Multiple sliders for better cord management Rich and responsive sound from superior speakers - Multiple earbud adapters for all ear sizes - Compatible with Both iPhone and iPhone 3G and all wireless phones with 3.5mm jacks Earbuds Specs - Speaker diameter of 10mm - Frequency response of 20Hz to 20kHz - Impedance of 16 Ohms - Max input power of 10mW - Cable length of 54 inches - Plug type 3.5mm - Sensitivity of 94dB +/-3dB SPL/mW Microphone Specs - Microphone with Noise canceling condenser - Speaker diameter of 10mm - Frequency response of 30Hz to 16kHz - Impedance of 10 Ohms - Sensitivity of 42dB +/-3dB