Marc Ecko On Ear Stereo Headphones with In-Line Microphone - Blue High intensity listening experience with crisp, clear sound and deep bass On Ear Stereo Headphones with Noise Reduction ; Compact Foldable Construction and Lightweight Frame Built-in mic and control switch works for iPhone, Android, Blackberry and any phone with a 3.5mm jack Lightweight and durable with a high protection cover and rubber finish for a premium feel ; Works with iPod, MP3 player, CD, portable DVD, PSP, MD, and Laptop Speaker Diameter: 40mm ; Frequency Response: 20-20kHz ; Maximum Power Input: 100mW ; Impedance: 32 Ohm ; Cable Length: 1.20 meters