NoiseHush NX22-11779 3.5mm Stereo Headphones with Neodymium Magnet Drivers Large for all Apple iPad/iPhone/MP3 Players & most Cell Phone Models - Black Adjustable Headband for perfect fit, Over-the-Ear design isolates external noise, Soft-cushion design for ultra comfort, High Fidelity Sound for extreme clarity with precise bass Microphone for hands-free calling, video chats and memo recording options, Function Button to easily switch between listening to music and answering calls, Tangle-free Cable, Neodymium Magnet Drivers Specifications: Driver Unit: 50 mm, Output Power: 30mw RMS, Speaker Frequency Response: 20Hz-20kHz, Sensitivity: -42  3dB, Mic Frequency Response 100-20kHz, Cable Length: 5.7 feet, Audio Connection: 3.5mm Stereo Jack Socket, Weight: 240g 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 Brands and Models: BlackBerry By RIM, Cal-Comp, Casio, Danger, HP, HP Palm, HTC, Huawei, LG, Motorola, Nokia, Pantech, Samsung, Sanyo, Sharp, Sony Ericsson, and ZTE