NoiseHush Crystal Clear Multimedia Headset for Smartphones - Retail Packaging - Black Noise Cancellation Microphone, Swivel Mic for L/R Ear, Adjustable & Lightweight, Answer/End/Redial & Volume Control Item is wired Headset. and Includes Multimedia/PC Converter. Specifications: Audio Connection: 3.5mm Nickel Plated, Frequency: 20Hz ~ 20KHz, Impedance: 32? Greater or lesser than 4? at 1KHz, Sensitivity: 60dB  3dB, Rated Input Power: 15Mw, Maximum Input Power: 50Mw Compatible with: Apple iPad, Apple iPad 2, Apple iPhone, Apple iPhone 3G, Apple iPhone 3Gs, Apple iPhone 4, Apple iPhone 4 CDMA, Apple iPhone 4S Also Compatible with most Cell Phone Models and Brands: BlackBerry, Cal-Comp, Casio, Danger, HP, HP Palm, HTC, Huawei, Kyocera, LG, Motorola, Nokia, Pantech, Samsung, Sanyo, Sharp, Sony Ericsson, and ZTE